79388099 has 32 divisors (see below), whose sum is σ = 99225600. Its totient is φ = 62013600.

The previous prime is 79388093. The next prime is 79388129. The reversal of 79388099 is 99088397.

It is a Cunningham number, because it is equal to 8910²-1.

It is a cyclic number.

It is not a de Polignac number, because 79388099 - 2²⁴ = 62610883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79388099.

It is not an unprimeable number, because it can be changed into a prime (79388093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525674 + ... + 525824.

It is an arithmetic number, because the mean of its divisors is an integer number (3100800).

Almost surely, 2^79388099 is an apocalyptic number.

79388099 is a deficient number, since it is larger than the sum of its proper divisors (19837501).

79388099 is a wasteful number, since it uses less digits than its factorization.

79388099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 79388099 is about 8909.9999438833. Note that the first 4 decimals coincide. The cubic root of 79388099 is about 429.7855411563.

The spelling of 79388099 in words is "seventy-nine million, three hundred eighty-eight thousand, ninety-nine".