The Number

3997

Three Thousand Nine Hundred and Ninety-Seven

In Base 21 Unovigesimal Is

91721

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See Three Thousand Nine Hundred and Ninety-Seven in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

3994
91421
Three Thousand Nine Hundred and Ninety-Four in Base 21 Unovigesimal
3995
91521
Three Thousand Nine Hundred and Ninety-Five in Base 21 Unovigesimal
3996
91621
Three Thousand Nine Hundred and Ninety-Six in Base 21 Unovigesimal
3998
91821
Three Thousand Nine Hundred and Ninety-Eight in Base 21 Unovigesimal
3999
91921
Three Thousand Nine Hundred and Ninety-Nine in Base 21 Unovigesimal
4000
91a21
Four Thousand in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

3.997e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0026dgd1jjcde6921

The reciprocal of 3997 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 91721 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Three thousand nine hundred and ninety-seven is a composite number with 4 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

Three thousand nine hundred and ninety-seven is a composite number with 4 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number three thousand nine hundred and ninety-seven has the following 2 prime factors:

7
721
Seven in Base 21 Unovigesimal
571
16421
Five Hundred and Seventy-One in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

7211 · 164211 = 91721

Base Conversions

The number three thousand nine hundred and ninety-seven in 35 different bases