| Nominal | 81984 |
| Cardinal | eighty-one thousand nine hundred eighty-four |
Cardinal eighty-one thousand nine hundred eighty-four | |
| Ordinal | 81,984th |
| Number of digits | 5 |
| Sum of digits | 30 |
| Product of digits | 2304 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 61 |
| Prime factorization in exponent form | 26 x 3 x 7 x 61 |
| Prime factors | 2, 3, 7, 61 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 9 |
| Sum of prime factors | 73 |
| Product of prime factors | 2562 |
| Is 81984 a prime number? | No |
| Is 81984 a semiprime number? | No |
| Is 81984 a Chen prime number? | No |
| Is 81984 a Mersenne prime number? | No |
| Is 81984 a Catalan number? | No |
| Is 81984 a Fibonacci number? | No |
| Is 81984 a Idoneal number? | No |
| Square of 81984 (n2) | 6721376256 |
| Cube of 81984 (n3) | 551045310971904 |
| Square root of 81984 | 286.32848269077 |
| Natural Logarithm (ln) of 81984 | 11.314279385256 |
| Decimal Logarithm (log) of 81984 | 4.9137291037286 |
| Sine of 81984 | 0.84044935198899 |
| Cosecant of 81984 | 1.1898396942462 |
| Cosine of 81984 | 0.54189010577911 |
| Secant of 81984 | 1.8453926162063 |
| Tangent of 81984 | 1.5509590284558 |
| Cotangent of 81984 | 0.64476235777526 |
| The spelling of 81984 in words is "eighty-one thousand nine hundred eighty-four", meaning that: |
| 81984 is not an aban number (as it contains the letter a) |
| 81984 is not an eban number (as it contains the letter e) |
| 81984 is not an iban number (as it contains the letter i) |
| 81984 is not an oban number (as it contains the letter o) |
| 81984 is not a tban number (as it contains the letter t) |
| 81984 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৮১৯৮৪ |
| Eastern Arabic numerals | ٨١٬٩٨٤ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓆼𓍪𓎍𓏽 |
| Khmer numerals | ៨១៩៨៤ |
| Japanese numerals | 八万千九百八十四 |
| Roman numerals | n/a |
| Thai numerals | ๘๑๙๘๔ |
| Arabic | واحد و ثمانون ألف و تسعة مائة و أربعة و ثمانون |
| Croatian | osamdeset i jedna tisuća devetsto osamdeset i četiri |
| Czech | osmdesát jedna tisíc devět set osmdesát čtyři |
| Danish | en og firs tusinde ni hundrede fire og firs |
| Dutch | éénentachtigduizend negenhonderdvierentachtig |
| Estonian | akpe blaenyi vɔ ɖekɛ alafa asieke blaenyi vɔ ene |
| Faroese | áttatieitt tusin og níggjuhundraðogáttatifýre |
| Filipino | walóng pû’t isáng libó’t siyám na daán at walóng pû’t ápat |
| Finnish | kahdeksankymmentäyksituhattayhdeksänsataakahdeksankymmentäneljä |
| French | quatre-vingt-un mille neuf cent quatre-vingt-quatre |
| Greek | ογδόντα μία χίλιάδες εννιακόσια ογδόντα τέσσερα |
| German | einundachtzigtausendneunhundertvierundachtzig |
| Hebrew | שמונים ואחד אלף תשע מאות שמונים וארבע |
| Hindi | इक्यासी हज़ार नौ सौ चौरासी |
| Hungarian | nyolcvanegyezerkilencszáznyolcvannégy |
| Icelandic | áttatíu og eitt þúsund og níuhundrað og áttatíu og fjórir |
| Indonesian | delapan puluh satu ribu sembilan ratus delapan puluh empat |
| Italian | ottant e unmilanovecentoottantaquattro |
| Japanese | 八万千九百八十四 |
| Korean | 팔만 천구백팔십사 |
| Latvian | astoņdesmit viens tūkstoši deviņsimt astoņdesmit četri |
| Lithuanian | aštuoniasdešimt vienas tūkstantis devyni šimtai aštuoniasdešimt keturi |
| Norwegian | åttiett tusen ni hundre og åttifire |
| Persian | هشتاد و یک هزار و نهصد و هشتاد و چهار |
| Polish | osiemdziesiąt jeden tysięcy dziewięćset osiemdziesiąt cztery |
| Portuguese | oitenta e um mil novecentos e oitenta e quatro |
| Romanian | optzeci şi una mii nouă sute optzeci şi patru |
| Russian | восемьдесят одна тысяча девятьсот восемьдесят четыре |
| Serbian | осамдесет и једна хиљада деветсто осамдесет и четири |
| Slovak | osemdesiatjedna tisíc deväťsto osemdesiatštyri |
| Slovene | osemdeset ena tisuću devetsto osemdeset štiri |
| Spanish | ochenta y un mil novecientos ochenta y cuatro |
| Swahili | elfu themanini na moja, mia tisa na themanini na nne |
| Swedish | åttioentusenniohundraåttiofyra |
| Thai | แปดหมื่นหนึ่งพันเก้าร้อยแปดสิบสี่ |
| Turkish | seksen bir bin dokuz yüz seksen dört |
| Ukrainian | вісімдесят одна тисяча девʼятсот вісімдесят чотири |
| Vietnamese | tám mươi mốt nghìn chín trăm tám mươi tư |
| Number 81984 reversed | 48918 | |
| Unicode Character | U+14040 | |
| Unix Timestamp | Thu, 01 Jan 1970 22:46:24 +0000 | |