79988129 has 8 divisors (see below), whose sum is σ = 87601920. Its totient is φ = 72583056.

The previous prime is 79988123. The next prime is 79988137. The reversal of 79988129 is 92188997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79988129 - 2⁴ = 79988113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79988123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51377 + ... + 52910.

It is an arithmetic number, because the mean of its divisors is an integer number (10950240).

Almost surely, 2^79988129 is an apocalyptic number.

It is an amenable number.

79988129 is a deficient number, since it is larger than the sum of its proper divisors (7613791).

79988129 is a wasteful number, since it uses less digits than its factorization.

79988129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104359.

The product of its digits is 653184, while the sum is 53.

The square root of 79988129 is about 8943.6082763055. The cubic root of 79988129 is about 430.8656242069.

The spelling of 79988129 in words is "seventy-nine million, nine hundred eighty-eight thousand, one hundred twenty-nine".