90779845400 has 96 divisors (see below), whose sum is σ = 231831590400. Its totient is φ = 32905065600.

The previous prime is 90779845397. The next prime is 90779845531. The reversal of 90779845400 is 454897709.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431936 + ... + 606735.

It is an arithmetic number, because the mean of its divisors is an integer number (2414912400).

Almost surely, 2^90779845400 is an apocalyptic number.

It is an amenable number.

90779845400 is an abundant number, since it is smaller than the sum of its proper divisors (141051745000).

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

90779845400 is a wasteful number, since it uses less digits than its factorization.

90779845400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038729 (or 1038720 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 90779845400 in words is "ninety billion, seven hundred seventy-nine million, eight hundred forty-five thousand, four hundred".