79999929 has 12 divisors (see below), whose sum is σ = 117514800. Its totient is φ = 52428984.

The previous prime is 79999879. The next prime is 79999973. The reversal of 79999929 is 92999997.

It is not a de Polignac number, because 79999929 - 2¹⁵ = 79967161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79999729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74799 + ... + 75860.

It is an arithmetic number, because the mean of its divisors is an integer number (9792900).

Almost surely, 2^79999929 is an apocalyptic number.

It is an amenable number.

79999929 is a deficient number, since it is larger than the sum of its proper divisors (37514871).

79999929 is a wasteful number, since it uses less digits than its factorization.

79999929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150724 (or 150721 counting only the distinct ones).

The product of its digits is 7440174, while the sum is 63.

The square root of 79999929 is about 8944.2679409776. The cubic root of 79999929 is about 430.8868105356.

The spelling of 79999929 in words is "seventy-nine million, nine hundred ninety-nine thousand, nine hundred twenty-nine".