90029904 has 40 divisors (see below), whose sum is σ = 244820640. Its totient is φ = 28430208.

The previous prime is 90029903. The next prime is 90029939. The reversal of 90029904 is 40992009.

It is a happy number.

It is a super-2 number, since 2×90029904² = 16210767228498432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90029903) 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, 48447 + ... + 50270.

It is an arithmetic number, because the mean of its divisors is an integer number (6120516).

Almost surely, 2^90029904 is an apocalyptic number.

It is an amenable number.

90029904 is an abundant number, since it is smaller than the sum of its proper divisors (154790736).

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

90029904 is a wasteful number, since it uses less digits than its factorization.

90029904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98747 (or 98741 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 90029904 is about 9488.4089287931. The cubic root of 90029904 is about 448.1901032067.

The spelling of 90029904 in words is "ninety million, twenty-nine thousand, nine hundred four".