90939204 has 18 divisors (see below), whose sum is σ = 229874190. Its totient is φ = 30313056.

The previous prime is 90939203. The next prime is 90939223. The reversal of 90939204 is 40293909.

It can be written as a sum of positive squares in only one way, i.e., 78322500 + 12616704 = 8850^2 + 3552^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2526089 = 90939204 / (9 + 0 + 9 + 3 + 9 + 2 + 0 + 4).

It is not an unprimeable number, because it can be changed into a prime (90939203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1263009 + ... + 1263080.

Almost surely, 2^90939204 is an apocalyptic number.

It is an amenable number.

90939204 is an abundant number, since it is smaller than the sum of its proper divisors (138934986).

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

90939204 is a wasteful number, since it uses less digits than its factorization.

90939204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526099 (or 2526094 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 90939204 is about 9536.2049055167. The cubic root of 90939204 is about 449.6939548688.

The spelling of 90939204 in words is "ninety million, nine hundred thirty-nine thousand, two hundred four".