90909000004 has 12 divisors (see below), whose sum is σ = 159182562924. Its totient is φ = 45428267744.

The previous prime is 90908999999. The next prime is 90909000023. The reversal of 90909000004 is 40000090909.

It can be written as a sum of positive squares in 2 ways, for example, as 70288614400 + 20620385604 = 265120^2 + 143598^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90909000004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6550267 + ... + 6564130.

It is an arithmetic number, because the mean of its divisors is an integer number (13265213577).

Almost surely, 2^90909000004 is an apocalyptic number.

It is an amenable number.

90909000004 is a deficient number, since it is larger than the sum of its proper divisors (68273562920).

90909000004 is a wasteful number, since it uses less digits than its factorization.

90909000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13116134 (or 13116132 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 90909000004 in words is "ninety billion, nine hundred nine million, four", and thus it is an aban number.