Names of 991997
| Nominal | 991997 |
| Cardinal | nine hundred ninety-one thousand nine hundred ninety-seven |
| Ordinal | 991,997th |
| This number as US currency | nine hundred ninety-one thousand nine hundred ninety-seven dollars |
| Is 991997 an odd number? | 991997 is an odd number |
| Is 991997 an even number? | 991997 is NOT an even number |
| Is 991997 a palindrome? | 991997 is NOT a palindrome number |
| Is 991997 a triangle number? | 991997 is NOT a triangle number |
991997 in other Bases
| Base 2 (Binary) | 111100100010111111012 |
| Base 3 (Ternary) | 12121012021223 |
| Base 4 (Quaternary) | 33020233314 |
| Base 5 (Quinary) | 2232204425 |
| Base 6 (Senary) | 331323256 |
| Base 8 (Octal) | 36213758 |
| Base 12 (Duodecimal) | 3BA0A512 |
| Base 16 (Hexadecimal) | F22FD16 |
| Base 20 (Vigesimal) | 63JJH20 |
Primes and Factors tests for 991997
| Is 991997 a Prime Number? | 991997 is NOT a prime |
| Is 991997 a perfect number? | 991997 is NOT a perfect number |
| Is 991997 a Mersenne Prime? | 991997 is NOT a Mersenne prime |
| Is 991997 a Fermat Prime? | 991997 is NOT a Fermat prime |
| Is 991997 a Fibonacci Prime? | 991997 is NOT a Fibonacci prime |
| Is 991997 a Partition Prime? | 991997 is NOT a Partition prime |
| Is 991997 a Pell Prime? | 991997 is NOT a Pell prime |
| Prime Factors | Prime factors of 991997 |
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991997 in other Numerals
| 991997 in Roman Numeral | CMXCMCMXCVII |
| 991997 in Chinese Numeral | 玖拾萬玖萬壹仟玖佰玖拾柒 |
| 991997 in Egyptian Numeral | 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂵𓆼𓍪𓎎𓐀 |
| 991997 in Babylonian Numeral |     |
Roots and stuff for 991997
| Is 991997 a square number? | 991997 is NOT a square number |
| Is 991997 a cube number? | 991997 is NOT a cube number |
| Square root of the number 991997 | 995.99046180172 |
| Cube root of the number 991997 | 99.732518507757 |
Recreational math for 991997
| Number 991997 reversed | 799199 |
| Sum of the digits | 44 |
| No of digits | 6 |