79918559 has 12 divisors (see below), whose sum is σ = 93490488. Its totient is φ = 68115600.

The previous prime is 79918549. The next prime is 79918613. The reversal of 79918559 is 95581997.

It is not a de Polignac number, because 79918559 - 2⁴ = 79918543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79918559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79918549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4364 + ... + 13374.

It is an arithmetic number, because the mean of its divisors is an integer number (7790874).

Almost surely, 2^79918559 is an apocalyptic number.

79918559 is a deficient number, since it is larger than the sum of its proper divisors (13571929).

79918559 is a wasteful number, since it uses less digits than its factorization.

79918559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9206 (or 9199 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 53.

The square root of 79918559 is about 8939.7180604312. The cubic root of 79918559 is about 430.7406722654.

The spelling of 79918559 in words is "seventy-nine million, nine hundred eighteen thousand, five hundred fifty-nine".