90811004 has 6 divisors (see below), whose sum is σ = 158919264. Its totient is φ = 45405500.

The previous prime is 90810989. The next prime is 90811057. The reversal of 90811004 is 40011809.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11351372 + ... + 11351379.

It is an arithmetic number, because the mean of its divisors is an integer number (26486544).

Almost surely, 2^90811004 is an apocalyptic number.

It is an amenable number.

90811004 is a deficient number, since it is larger than the sum of its proper divisors (68108260).

90811004 is a wasteful number, since it uses less digits than its factorization.

90811004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22702755 (or 22702753 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 90811004 is about 9529.4807833376. The cubic root of 90811004 is about 449.4825393500.

The spelling of 90811004 in words is "ninety million, eight hundred eleven thousand, four".