108990440793 has 48 divisors (see below), whose sum is σ = 175192239040. Its totient is φ = 64857532032.

The previous prime is 108990440789. The next prime is 108990440821. The reversal of 108990440793 is 397044099801.

108990440793 is a `hidden beast` number, since 108 + 9 + 9 + 0 + 440 + 7 + 93 = 666.

It is not a de Polignac number, because 108990440793 - 2² = 108990440789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108990440773) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 628398 + ... + 782856.

Almost surely, 2^108990440793 is an apocalyptic number.

108990440793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

108990440793 is a deficient number, since it is larger than the sum of its proper divisors (66201798247).

108990440793 is a wasteful number, since it uses less digits than its factorization.

108990440793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154678 (or 154675 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 108990440793 in words is "one hundred eight billion, nine hundred ninety million, four hundred forty thousand, seven hundred ninety-three".