The Number

3999

Three Thousand Nine Hundred and Ninety-Nine

In Base 21 Unovigesimal Is

91921

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

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

Nearby Numbers

Positive, nonzero integers within three units

3996
91621
Three Thousand Nine Hundred and Ninety-Six in Base 21 Unovigesimal
3997
91721
Three Thousand Nine Hundred and Ninety-Seven in Base 21 Unovigesimal
3998
91821
Three Thousand Nine Hundred and Ninety-Eight in Base 21 Unovigesimal
4000
91a21
Four Thousand in Base 21 Unovigesimal
4001
91b21
Four Thousand and One in Base 21 Unovigesimal
4002
91c21
Four Thousand and Two in Base 21 Unovigesimal

Scientific Notation

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

3.999e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0026d5if7bgge0c21

The reciprocal of 3999 in Base 21 Unovigesimal.

Palindrome?

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

The number 91921 is 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-nine is a composite number with 8 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-nine is a composite number with 8 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-nine has the following 3 prime factors:

3
321
Three in Base 21 Unovigesimal
31
1a21
Thirty-One in Base 21 Unovigesimal
43
2121
Forty-Three in Base 21 Unovigesimal

Prime Factorization

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

3211 · 1a211 · 21211 = 91921

Base Conversions

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