The Number

389

Three Hundred and Eighty-Nine

In Base 21 Unovigesimal Is

ib21

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

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

Nearby Numbers

Positive, nonzero integers within three units

386
i821
Three Hundred and Eighty-Six in Base 21 Unovigesimal
387
i921
Three Hundred and Eighty-Seven in Base 21 Unovigesimal
388
ia21
Three Hundred and Eighty-Eight in Base 21 Unovigesimal
390
ic21
Three Hundred and Ninety in Base 21 Unovigesimal
391
id21
Three Hundred and Ninety-One in Base 21 Unovigesimal
392
ie21
Three Hundred and Ninety-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.

3.89e2

Reciprocal

A number multiplied with its reciprocal is one.

0.012gjk9dja587f21

The reciprocal of 389 in Base 21 Unovigesimal.

Palindrome?

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

The number ib21 is not a palindrome.

A Prime Number

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

Three hundred and eighty-nine is the 77th prime number.   See primes in Base 21 Unovigesimal

Not A Composite

Composites have more than just these two factors.

Three Hundred and Eighty-Nine is not a composite number because it has exactly two factors: One and Three Hundred and Eighty-Nine

Prime Factors

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

The number three hundred and eighty-nine has the following 1 prime factor:

389
ib21
Three Hundred and Eighty-Nine in Base 21 Unovigesimal

Prime Factorization

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

ib211 = ib21

Base Conversions

The number three hundred and eighty-nine in 35 different bases