| Nominal | 11987 |
| Cardinal | eleven thousand nine hundred eighty-seven |
Cardinal eleven thousand nine hundred eighty-seven | |
| Ordinal | 11,987th |
| Number of digits | 5 |
| Sum of digits | 26 |
| Product of digits | 504 |
| Number parity | Odd |
| Prime factorization | 11987 |
| Prime factors | 11987 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 11987 |
| Product of prime factors | 11987 |
| Is 11987 a prime number? | Yes |
| Is 11987 a semiprime number? | No |
| Is 11987 a Chen prime number? | Yes |
| Is 11987 a Mersenne prime number? | No |
| Is 11987 a Catalan number? | No |
| Is 11987 a Fibonacci number? | No |
| Is 11987 a Idoneal number? | No |
| Square of 11987 (n2) | 143688169 |
| Cube of 11987 (n3) | 1722390081803 |
| Square root of 11987 | 109.48515881159 |
| Natural Logarithm (ln) of 11987 | 9.3915780082071 |
| Decimal Logarithm (log) of 11987 | 4.0787105053283 |
| Sine of 11987 | -0.96810819687553 |
| Cosecant of 11987 | -1.0329423955167 |
| Cosine of 11987 | 0.2505324712336 |
| Secant of 11987 | 3.9914985673358 |
| Tangent of 11987 | -3.8642024808547 |
| Cotangent of 11987 | -0.25878561099076 |
| The spelling of 11987 in words is "eleven thousand nine hundred eighty-seven", meaning that: |
| 11987 is not an aban number (as it contains the letter a) |
| 11987 is not an eban number (as it contains the letter e) |
| 11987 is not an iban number (as it contains the letter i) |
| 11987 is not an oban number (as it contains the letter o) |
| 11987 is not a tban number (as it contains the letter t) |
| 11987 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১১৯৮৭ |
| Eastern Arabic numerals | ١١٬٩٨٧ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓍪𓎍𓐀 |
| Khmer numerals | ១១៩៨៧ |
| Japanese numerals | 一万千九百八十七 |
| Roman numerals | n/a |
| Thai numerals | ๑๑๙๘๗ |
| Arabic | إحدى عشر ألف و تسعة مائة و سبعة و ثمانون |
| Croatian | jedanaest tisuća devetsto osamdeset i sedam |
| Czech | jedenáct tisíc devět set osmdesát sedm |
| Danish | elleve tusinde ni hundrede syv og firs |
| Dutch | elfduizend negenhonderdzevenentachtig |
| Estonian | akpe wuiɖekɛ alafa asieke blaenyi vɔ adre |
| Faroese | ellivu tusin og níggjuhundraðogáttatisjey |
| Filipino | labíng-isáng libó’t siyám na daán at walóng pû’t pitó |
| Finnish | yksitoistatuhattayhdeksänsataakahdeksankymmentäseitsemän |
| French | onze mille neuf cent quatre-vingt-sept |
| Greek | έντεκα χίλιάδες εννιακόσια ογδόντα επτά |
| German | elftausendneunhundertsiebenundachtzig |
| Hebrew | אחד עשר אלף תשע מאות שמונים ושבע |
| Hindi | ग्यारह हज़ार नौ सौ सत्तासी |
| Hungarian | tizenegyezerkilencszáznyolcvanhét |
| Icelandic | ellefu þúsund og níuhundrað og áttatíu og sjó |
| Indonesian | sebelas ribu sembilan ratus delapan puluh tujuh |
| Italian | undicimilanovecentoottantasette |
| Japanese | 一万千九百八十七 |
| Korean | 만 천구백팔십칠 |
| Latvian | vienpadsmit tūkstoši deviņsimt astoņdesmit septiņi |
| Lithuanian | vienuolika tūkstančių devyni šimtai aštuoniasdešimt septyni |
| Norwegian | elleve tusen ni hundre og åttisju |
| Persian | یازده هزار و نهصد و هشتاد و هفت |
| Polish | jedenaście tysięcy dziewięćset osiemdziesiąt siedem |
| Portuguese | onze mil novecentos e oitenta e sete |
| Romanian | unsprezece mii nouă sute optzeci şi şapte |
| Russian | одиннадцать тысяч девятьсот восемьдесят семь |
| Serbian | једанаест хиљада деветсто осамдесет и седам |
| Slovak | jedenásť tisíc deväťsto osemdesiatsedem |
| Slovene | enajst tisuću devetsto osemdeset sedem |
| Spanish | once mil novecientos ochenta y siete |
| Swahili | elfu kumi na moja, mia tisa na themanini na saba |
| Swedish | elvatusenniohundraåttiosju |
| Thai | หนึ่งหมื่นหนึ่งพันเก้าร้อยแปดสิบเจ็ด |
| Turkish | on bir bin dokuz yüz seksen yedi |
| Ukrainian | одинадцять тисяч девʼятсот вісімдесят сім |
| Vietnamese | mười một nghìn chín trăm tám mươi bảy |
| Number 11987 reversed | 78911 | |
| Unicode Character | U+2ED3 | ⻓ |
| Unix Timestamp | Thu, 01 Jan 1970 03:19:47 +0000 | |