90559900 has 18 divisors (see below), whose sum is σ = 196515200. Its totient is φ = 36223920.

The previous prime is 90559891. The next prime is 90559913. The reversal of 90559900 is 995509.

It is a happy number.

90559900 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

90559900 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 90559900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 452700 + ... + 452899.

Almost surely, 2^90559900 is an apocalyptic number.

It is an amenable number.

90559900 is an abundant number, since it is smaller than the sum of its proper divisors (105955300).

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

90559900 is a wasteful number, since it uses less digits than its factorization.

90559900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905613 (or 905606 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 37.

The square root of 90559900 is about 9516.2965485529. The cubic root of 90559900 is about 449.0678647360.

The spelling of 90559900 in words is "ninety million, five hundred fifty-nine thousand, nine hundred".