Number 9991

Names of 9991

Nominal 9991
Cardinal nine thousand nine hundred ninety-one
Ordinal 9,991st
This number as US currency nine thousand nine hundred ninety-one dollars

Properties (and some facts) of 9991

Is 9991 an odd number? 9991 is an odd number
Is 9991 an even number? 9991 is NOT an even number
Is 9991 a palindrome? 9991 is NOT a palindrome number
Is 9991 a triangle number? 9991 is NOT a triangle number

9991 in other Bases

Base 2 (Binary) 100111000001112
Base 3 (Ternary) 1112010013
Base 4 (Quaternary) 21300134
Base 5 (Quinary) 3044315
Base 6 (Senary) 1141316
Base 8 (Octal) 234078
Base 12 (Duodecimal) 594712
Base 16 (Hexadecimal) 270716
Base 20 (Vigesimal) 14JB20

Primes and Factors tests for 9991

Is 9991 a Prime Number? 9991 is NOT a prime
Is 9991 a perfect number? 9991 is NOT a perfect number
Is 9991 a Mersenne Prime? 9991 is NOT a Mersenne prime
Is 9991 a Fermat Prime? 9991 is NOT a Fermat prime
Is 9991 a Fibonacci Prime? 9991 is NOT a Fibonacci prime
Is 9991 a Partition Prime? 9991 is NOT a Partition prime
Is 9991 a Pell Prime? 9991 is NOT a Pell prime
Prime Factors Prime factors of 9991

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9991 in other Numerals

9991 in Roman Numeral MXCMXCI
9991 in Chinese Numeral 玖仟玖佰玖拾壹
9991 in Egyptian Numeral 𓇄𓍪𓎎𓏺
9991 in Babylonian Numeral 2   46   31  

Roots and stuff for 9991

Is 9991 a square number? 9991 is NOT a square number
Is 9991 a cube number? 9991 is NOT a cube number
Square root of the number 9991 99.954989870441
Cube root of the number 9991 21.537881656287

Recreational math for 9991

Number 9991 reversed 1999
Sum of the digits 28
No of digits 4