90459564 has 24 divisors (see below), whose sum is σ = 227309040. Its totient is φ = 27833664.

The previous prime is 90459563. The next prime is 90459599. The reversal of 90459564 is 46595409.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90459563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289779 + ... + 290090.

It is an arithmetic number, because the mean of its divisors is an integer number (9471210).

Almost surely, 2^90459564 is an apocalyptic number.

It is an amenable number.

90459564 is an abundant number, since it is smaller than the sum of its proper divisors (136849476).

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

90459564 is a wasteful number, since it uses less digits than its factorization.

90459564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579889 (or 579887 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 90459564 is about 9511.0232887950. The cubic root of 90459564 is about 448.9019549381.

The spelling of 90459564 in words is "ninety million, four hundred fifty-nine thousand, five hundred sixty-four".