90904244 has 12 divisors (see below), whose sum is σ = 160870500. Its totient is φ = 44941248.

The previous prime is 90904237. The next prime is 90904249. The reversal of 90904244 is 44240909.

It can be written as a sum of positive squares in 2 ways, for example, as 62410000 + 28494244 = 7900^2 + 5338^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90904244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90904249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127319 + ... + 128030.

It is an arithmetic number, because the mean of its divisors is an integer number (13405875).

Almost surely, 2^90904244 is an apocalyptic number.

It is an amenable number.

90904244 is a deficient number, since it is larger than the sum of its proper divisors (69966256).

90904244 is a wasteful number, since it uses less digits than its factorization.

90904244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255442 (or 255440 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 90904244 is about 9534.3717150109. The cubic root of 90904244 is about 449.6363218019.

The spelling of 90904244 in words is "ninety million, nine hundred four thousand, two hundred forty-four".