Names of 13991
| Nominal | 13991 |
| Cardinal | thirteen thousand nine hundred ninety-one |
| Ordinal | 13,991st |
| This number as US currency | thirteen thousand nine hundred ninety-one dollars |
| Is 13991 an odd number? | 13991 is an odd number |
| Is 13991 an even number? | 13991 is NOT an even number |
| Is 13991 a palindrome? | 13991 is NOT a palindrome number |
| Is 13991 a triangle number? | 13991 is NOT a triangle number |
13991 in other Bases
| Base 2 (Binary) | 110110101001112 |
| Base 3 (Ternary) | 2010120123 |
| Base 4 (Quaternary) | 31222134 |
| Base 5 (Quinary) | 4214315 |
| Base 6 (Senary) | 1444356 |
| Base 8 (Octal) | 332478 |
| Base 12 (Duodecimal) | 811B12 |
| Base 16 (Hexadecimal) | 36A716 |
| Base 20 (Vigesimal) | 1EJB20 |
Primes and Factors tests for 13991
| Is 13991 a Prime Number? | 13991 is NOT a prime |
| Is 13991 a perfect number? | 13991 is NOT a perfect number |
| Is 13991 a Mersenne Prime? | 13991 is NOT a Mersenne prime |
| Is 13991 a Fermat Prime? | 13991 is NOT a Fermat prime |
| Is 13991 a Fibonacci Prime? | 13991 is NOT a Fibonacci prime |
| Is 13991 a Partition Prime? | 13991 is NOT a Partition prime |
| Is 13991 a Pell Prime? | 13991 is NOT a Pell prime |
| Prime Factors | Prime factors of 13991 |
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13991 in other Numerals
| 13991 in Roman Numeral | XMMMCMXCI |
| 13991 in Chinese Numeral | 壹萬叄仟玖佰玖拾壹 |
| 13991 in Egyptian Numeral | 𓂭𓆾𓍪𓎎𓏺 |
| 13991 in Babylonian Numeral |    |
Roots and stuff for 13991
| Is 13991 a square number? | 13991 is NOT a square number |
| Is 13991 a cube number? | 13991 is NOT a cube number |
| Square root of the number 13991 | 118.28355760629 |
| Cube root of the number 13991 | 24.096256944093 |
Recreational math for 13991
| Number 13991 reversed | 19931 |
| Sum of the digits | 23 |
| No of digits | 5 |