90509356 has 12 divisors (see below), whose sum is σ = 181018768. Its totient is φ = 38789712.

The previous prime is 90509297. The next prime is 90509371. The reversal of 90509356 is 65390509.

90509356 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616211 + ... + 1616266.

Almost surely, 2^90509356 is an apocalyptic number.

It is an amenable number.

90509356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90509356 is a wasteful number, since it uses less digits than its factorization.

90509356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232488 (or 3232486 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 90509356 is about 9513.6405229544. The cubic root of 90509356 is about 448.9843034312.

The spelling of 90509356 in words is "ninety million, five hundred nine thousand, three hundred fifty-six".