90193912 has 16 divisors (see below), whose sum is σ = 178014600. Its totient is φ = 42723360.

The previous prime is 90193877. The next prime is 90193913. The reversal of 90193912 is 21939109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90193913) 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, 296539 + ... + 296842.

Almost surely, 2^90193912 is an apocalyptic number.

It is an amenable number.

90193912 is a deficient number, since it is larger than the sum of its proper divisors (87820688).

90193912 is a wasteful number, since it uses less digits than its factorization.

90193912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593406 (or 593402 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 90193912 is about 9497.0475412098. The cubic root of 90193912 is about 448.4620949502.

The spelling of 90193912 in words is "ninety million, one hundred ninety-three thousand, nine hundred twelve".