79729911 has 12 divisors (see below), whose sum is σ = 115288680. Its totient is φ = 53096400.

The previous prime is 79729901. The next prime is 79729913. The reversal of 79729911 is 11992797.

It is not a de Polignac number, because 79729911 - 2⁵ = 79729879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79729913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5245 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (9607390).

Almost surely, 2^79729911 is an apocalyptic number.

79729911 is a deficient number, since it is larger than the sum of its proper divisors (35558769).

79729911 is a wasteful number, since it uses less digits than its factorization.

79729911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9486 (or 9483 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 79729911 is about 8929.1607108395. The cubic root of 79729911 is about 430.4014836872.

The spelling of 79729911 in words is "seventy-nine million, seven hundred twenty-nine thousand, nine hundred eleven".