90968904 has 96 divisors (see below), whose sum is σ = 280982520. Its totient is φ = 26339328.

The previous prime is 90968881. The next prime is 90968929. The reversal of 90968904 is 40986909.

It can be written as a sum of positive squares in 4 ways, for example, as 77264100 + 13704804 = 8790^2 + 3702^2 .

It is a super-2 number, since 2×90968904² = 16550682989922432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90968904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13054 + ... + 18770.

Almost surely, 2^90968904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90968904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140491260).

90968904 is an abundant number, since it is smaller than the sum of its proper divisors (190013616).

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

90968904 is a wasteful number, since it uses less digits than its factorization.

90968904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759 (or 5752 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 90968904 is about 9537.7620016438. The cubic root of 90968904 is about 449.7429049957.

The spelling of 90968904 in words is "ninety million, nine hundred sixty-eight thousand, nine hundred four".