79800099 has 16 divisors (see below), whose sum is σ = 107886240. Its totient is φ = 52462080.

The previous prime is 79800067. The next prime is 79800109. The reversal of 79800099 is 99000897.

It is a happy number.

It is not a de Polignac number, because 79800099 - 2⁵ = 79800067 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79800099.

It is not an unprimeable number, because it can be changed into a prime (79800029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90139 + ... + 91019.

It is an arithmetic number, because the mean of its divisors is an integer number (6742890).

Almost surely, 2^79800099 is an apocalyptic number.

79800099 is a deficient number, since it is larger than the sum of its proper divisors (28086141).

79800099 is a wasteful number, since it uses less digits than its factorization.

79800099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 79800099 is about 8933.0901148483. The cubic root of 79800099 is about 430.5277439524.

The spelling of 79800099 in words is "seventy-nine million, eight hundred thousand, ninety-nine".