| Nominal | 81400 |
| Cardinal | eighty-one thousand four hundred |
Cardinal eighty-one thousand four hundred | |
| Ordinal | 81,400th |
| Number of digits | 5 |
| Sum of digits | 13 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 5 x 5 x 11 x 37 |
| Prime factorization in exponent form | 23 x 52 x 11 x 37 |
| Prime factors | 2, 5, 11, 37 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 7 |
| Sum of prime factors | 55 |
| Product of prime factors | 4070 |
| Is 81400 a prime number? | No |
| Is 81400 a semiprime number? | No |
| Is 81400 a Chen prime number? | No |
| Is 81400 a Mersenne prime number? | No |
| Is 81400 a Catalan number? | No |
| Is 81400 a Fibonacci number? | No |
| Is 81400 a Idoneal number? | No |
| Square of 81400 (n2) | 6625960000 |
| Cube of 81400 (n3) | 539353144000000 |
| Square root of 81400 | 285.30685235374 |
| Natural Logarithm (ln) of 81400 | 11.307130551991 |
| Decimal Logarithm (log) of 81400 | 4.9106244048892 |
| Sine of 81400 | 0.97217550038307 |
| Cosecant of 81400 | 1.0286208607458 |
| Cosine of 81400 | 0.23425370104853 |
| Secant of 81400 | 4.2688759901081 |
| Tangent of 81400 | 4.1500966517566 |
| Cotangent of 81400 | 0.24095824360542 |
| The spelling of 81400 in words is "eighty-one thousand four hundred", meaning that: |
| 81400 is not an aban number (as it contains the letter a) |
| 81400 is not an eban number (as it contains the letter e) |
| 81400 is not an iban number (as it contains the letter i) |
| 81400 is not an oban number (as it contains the letter o) |
| 81400 is not a tban number (as it contains the letter t) |
| 81400 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৮১৪০০ |
| Eastern Arabic numerals | ٨١٬٤٠٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓂭𓆼𓍥 |
| Khmer numerals | ៨១៤០០ |
| Japanese numerals | 八万千四百 |
| Roman numerals | n/a |
| Thai numerals | ๘๑๔๐๐ |
| Arabic | واحد و ثمانون ألف و أربعة مائة |
| Croatian | osamdeset i jedna tisuća četiristo |
| Czech | osmdesát jedna tisíc čtyři sta |
| Danish | en og firs tusinde fire hundrede |
| Dutch | éénentachtigduizend vierhonderd |
| Estonian | akpe blaenyi vɔ ɖekɛ alafa ene |
| Faroese | áttatieitt tusin og fýrehundrað |
| Filipino | walóng pû’t isáng libó’t ápat na daán |
| Finnish | kahdeksankymmentäyksituhattaneljäsataa |
| French | quatre-vingt-un mille quatre cents |
| Greek | ογδόντα μία χίλιάδες τετρακόσια |
| German | einundachtzigtausendvierhundert |
| Hebrew | שמונים ואחד אלף ארבע מאות |
| Hindi | इक्यासी हज़ार चार सौ |
| Hungarian | nyolcvanegyezernégyszáz |
| Icelandic | áttatíu og eitt þúsund og fjögurhundrað |
| Indonesian | delapan puluh satu ribu empat ratus |
| Italian | ottant e unmilaquattrocento |
| Japanese | 八万千四百 |
| Korean | 팔만 천사백 |
| Latvian | astoņdesmit viens tūkstoši četrsimt |
| Lithuanian | aštuoniasdešimt vienas tūkstantis keturi šimtai |
| Norwegian | åttiett tusen fire hundre |
| Persian | هشتاد و یک هزار و چهارصد |
| Polish | osiemdziesiąt jeden tysięcy czterysta |
| Portuguese | oitenta e um mil e quatrocentos |
| Romanian | optzeci şi una mii patru sute |
| Russian | восемьдесят одна тысяча четыреста |
| Serbian | осамдесет и једна хиљада четиристо |
| Slovak | osemdesiatjedna tisíc štyristo |
| Slovene | osemdeset ena tisuću štiristo |
| Spanish | ochenta y un mil cuatrocientos |
| Swahili | elfu themanini na moja, mia nne |
| Swedish | åttioentusenfyrahundra |
| Thai | แปดหมื่นหนึ่งพันสี่ร้อย |
| Turkish | seksen bir bin dört yüz |
| Ukrainian | вісімдесят одна тисяча чотириста |
| Vietnamese | tám mươi mốt nghìn bốn trăm |
| Number 81400 reversed | 00418 | |
| Unicode Character | U+13DF8 | |
| Unix Timestamp | Thu, 01 Jan 1970 22:36:40 +0000 | |