90790579 has 4 divisors (see below), whose sum is σ = 99044280. Its totient is φ = 82536880.

The previous prime is 90790577. The next prime is 90790597. The reversal of 90790579 is 97509709.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90790579 - 2¹ = 90790577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90790571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4126834 + ... + 4126855.

It is an arithmetic number, because the mean of its divisors is an integer number (24761070).

Almost surely, 2^90790579 is an apocalyptic number.

90790579 is a deficient number, since it is larger than the sum of its proper divisors (8253701).

90790579 is a wasteful number, since it uses less digits than its factorization.

90790579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8253700.

The product of its (nonzero) digits is 178605, while the sum is 46.

The square root of 90790579 is about 9528.4090487342. The cubic root of 90790579 is about 449.4488379671.

The spelling of 90790579 in words is "ninety million, seven hundred ninety thousand, five hundred seventy-nine".