90595904 has 56 divisors (see below), whose sum is σ = 209702400. Its totient is φ = 38817408.

The previous prime is 90595903. The next prime is 90595909. The reversal of 90595904 is 40959509.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (90595903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19889 + ... + 24015.

Almost surely, 2^90595904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90595904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104851200).

90595904 is an abundant number, since it is smaller than the sum of its proper divisors (119106496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90595904 is an equidigital number, since it uses as much as digits as its factorization.

90595904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160 (or 4136 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 90595904 is about 9518.1880628615. The cubic root of 90595904 is about 449.1273689875.

The spelling of 90595904 in words is "ninety million, five hundred ninety-five thousand, nine hundred four".