The Number
9
Nine
In Base 21 Unovigesimal Is
921
The numbers with a 21 subscript use Base 21 Unovigesimal notation.
For more familiar numbers: See Nine in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
9e0
Reciprocal
A number multiplied with its reciprocal is one.
0.26kkkkkkkkkkj21
The reciprocal of 9 in Base 21 Unovigesimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 921 is a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Nine is a composite number with 3 total factors (including 1 and itself). See primes in Base 21 Unovigesimal
A Composite
Composites have more than just these two factors.
Nine is a composite number with 3 total factors (including 1 and itself).
Prime Factors
The number nine has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
3212
= 921
Base Conversions
The number nine in 35 different bases