90108579 has 24 divisors (see below), whose sum is σ = 135649360. Its totient is φ = 53127360.

The previous prime is 90108559. The next prime is 90108581. The reversal of 90108579 is 97580109.

It is a happy number.

It is not a de Polignac number, because 90108579 - 2¹⁷ = 89977507 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90108559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10077 + ... + 16785.

Almost surely, 2^90108579 is an apocalyptic number.

90108579 is a deficient number, since it is larger than the sum of its proper divisors (45540781).

90108579 is a wasteful number, since it uses less digits than its factorization.

90108579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771 (or 6760 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 90108579 is about 9492.5538713246. The cubic root of 90108579 is about 448.3206194331.

The spelling of 90108579 in words is "ninety million, one hundred eight thousand, five hundred seventy-nine".