90423956 has 24 divisors (see below), whose sum is σ = 182454720. Its totient is φ = 38408832.

The previous prime is 90423919. The next prime is 90423959. The reversal of 90423956 is 65932409.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90423959) 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, 11126 + ... + 17453.

It is an arithmetic number, because the mean of its divisors is an integer number (7602280).

Almost surely, 2^90423956 is an apocalyptic number.

It is an amenable number.

90423956 is an abundant number, since it is smaller than the sum of its proper divisors (92030764).

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

90423956 is a wasteful number, since it uses less digits than its factorization.

90423956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28703 (or 28701 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 90423956 is about 9509.1511713717. The cubic root of 90423956 is about 448.8430461178.

The spelling of 90423956 in words is "ninety million, four hundred twenty-three thousand, nine hundred fifty-six".