90403868 has 12 divisors (see below), whose sum is σ = 158385360. Its totient is φ = 45150912.

The previous prime is 90403847. The next prime is 90403877. The reversal of 90403868 is 86830409.

It is a super-2 number, since 2×90403868² = 16345718698722848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8621 + ... + 15972.

It is an arithmetic number, because the mean of its divisors is an integer number (13198780).

Almost surely, 2^90403868 is an apocalyptic number.

It is an amenable number.

90403868 is a deficient number, since it is larger than the sum of its proper divisors (67981492).

90403868 is a wasteful number, since it uses less digits than its factorization.

90403868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25516 (or 25514 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 90403868 is about 9508.0948670067. The cubic root of 90403868 is about 448.8098063022.

The spelling of 90403868 in words is "ninety million, four hundred three thousand, eight hundred sixty-eight".