| Nominal | 20989 |
| Cardinal | twenty thousand nine hundred eighty-nine |
Cardinal twenty thousand nine hundred eighty-nine | |
| Ordinal | 20,989th |
| Number of digits | 5 |
| Sum of digits | 28 |
| Product of digits | 0 |
| Number parity | Odd |
| Prime factorization | 139 x 151 |
| Prime factors | 139, 151 |
| Number of distinct prime factors ω(n) | 2 |
| Total number of prime factors Ω(n) | 2 |
| Sum of prime factors | 290 |
| Product of prime factors | 20989 |
| Is 20989 a prime number? | No |
| Is 20989 a semiprime number? | Yes |
| Is 20989 a Chen prime number? | No |
| Is 20989 a Mersenne prime number? | No |
| Is 20989 a Catalan number? | No |
| Is 20989 a Fibonacci number? | No |
| Is 20989 a Idoneal number? | No |
| Square of 20989 (n2) | 440538121 |
| Cube of 20989 (n3) | 9246454621669 |
| Square root of 20989 | 144.87580888471 |
| Natural Logarithm (ln) of 20989 | 9.9517537699456 |
| Decimal Logarithm (log) of 20989 | 4.3219917475473 |
| Sine of 20989 | -0.01948013434155 |
| Cosecant of 20989 | -51.334348237376 |
| Cosine of 20989 | -0.99981024417938 |
| Secant of 20989 | -1.0001897918347 |
| Tangent of 20989 | 0.019483831511987 |
| Cotangent of 20989 | 51.324607246 |
| The spelling of 20989 in words is "twenty thousand nine hundred eighty-nine", meaning that: |
| 20989 is not an aban number (as it contains the letter a) |
| 20989 is not an eban number (as it contains the letter e) |
| 20989 is not an iban number (as it contains the letter i) |
| 20989 is not an oban number (as it contains the letter o) |
| 20989 is not a tban number (as it contains the letter t) |
| 20989 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২০৯৮৯ |
| Eastern Arabic numerals | ٢٠٬٩٨٩ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓍪𓎍𓐂 |
| Khmer numerals | ២០៩៨៩ |
| Japanese numerals | 二万九百八十九 |
| Roman numerals | n/a |
| Thai numerals | ๒๐๙๘๙ |
| Arabic | عشرون ألف و تسعة مائة و تسعة و ثمانون |
| Croatian | dvadeset tisuća devetsto osamdeset i devet |
| Czech | dvacet tisíc devět set osmdesát devět |
| Danish | tyve tusinde ni hundrede ni og firs |
| Dutch | twintigduizend negenhonderdnegenentachtig |
| Estonian | akpe blaeve alafa asieke blaenyi vɔ asieke |
| Faroese | tjúgo tusin og níggjuhundraðogáttatiníggju |
| Filipino | dalawáng pû libó’t siyám na daán at walóng pû’t siyám |
| Finnish | kaksikymmentätuhattayhdeksänsataakahdeksankymmentäyhdeksän |
| French | vingt mille neuf cent quatre-vingt-neuf |
| Greek | είκοσι χίλιάδες εννιακόσια ογδόντα εννέα |
| German | zwanzigtausendneunhundertneunundachtzig |
| Hebrew | עשרים אלף תשע מאות שמונים ותשע |
| Hindi | बीस हज़ार नौ सौ नवासी |
| Hungarian | húszezerkilencszáznyolcvankilenc |
| Icelandic | tuttugu þúsund og níuhundrað og áttatíu og níu |
| Indonesian | dua puluh ribu sembilan ratus delapan puluh sembilan |
| Italian | ventimilanovecentoottantanove |
| Japanese | 二万九百八十九 |
| Korean | 이만 구백팔십구 |
| Latvian | divdesmit tūkstoši deviņsimt astoņdesmit deviņi |
| Lithuanian | dvidešimt tūkstančių devyni šimtai aštuoniasdešimt devyni |
| Norwegian | tjue tusen ni hundre og åttini |
| Persian | بیست هزار و نهصد و هشتاد و نه |
| Polish | dwadzieścia tysięcy dziewięćset osiemdziesiąt dziewięć |
| Portuguese | vinte mil novecentos e oitenta e nove |
| Romanian | douăzeci mii nouă sute optzeci şi nouă |
| Russian | двадцать тысяч девятьсот восемьдесят девять |
| Serbian | двадесет хиљада деветсто осамдесет и девет |
| Slovak | dvadsať tisíc deväťsto osemdesiatdeväť |
| Slovene | dvaset tisuću devetsto osemdeset devet |
| Spanish | veinte mil novecientos ochenta y nueve |
| Swahili | elfu ishirini, mia tisa na themanini na tisa |
| Swedish | tjugotusenniohundraåttionio |
| Thai | สองหมื่นเก้าร้อยแปดสิบเก้า |
| Turkish | yirmi bin dokuz yüz seksen dokuz |
| Ukrainian | двадцять тисяч девʼятсот вісімдесят девʼять |
| Vietnamese | hai mươi nghìn chín trăm tám mươi chín |
| Number 20989 reversed | 98902 | |
| Unicode Character | U+51FD | 函 |
| Unix Timestamp | Thu, 01 Jan 1970 05:49:49 +0000 | |