90929090920 has 16 divisors (see below), whose sum is σ = 204590454660. Its totient is φ = 36371636352.

The previous prime is 90929090881. The next prime is 90929090927. The reversal of 90929090920 is 2909092909.

It can be written as a sum of positive squares in 2 ways, for example, as 82301281924 + 8627808996 = 286882^2 + 92886^2 .

It is not an unprimeable number, because it can be changed into a prime (90929090927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136613597 + ... + 1136613676.

Almost surely, 2^90929090920 is an apocalyptic number.

It is an amenable number.

90929090920 is an abundant number, since it is smaller than the sum of its proper divisors (113661363740).

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

90929090920 is a wasteful number, since it uses less digits than its factorization.

90929090920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273227284 (or 2273227280 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 49.

The spelling of 90929090920 in words is "ninety billion, nine hundred twenty-nine million, ninety thousand, nine hundred twenty".