79112111 has 12 divisors (see below), whose sum is σ = 89394768. Its totient is φ = 69848064.

The previous prime is 79112069. The next prime is 79112113. The reversal of 79112111 is 11121197.

It is a happy number.

It is not a de Polignac number, because 79112111 - 2²⁶ = 12003247 is a prime.

It is a super-2 number, since 2×79112111² = 12517452213752642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79112113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6290 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (7449564).

Almost surely, 2^79112111 is an apocalyptic number.

79112111 is a deficient number, since it is larger than the sum of its proper divisors (10282657).

79112111 is a wasteful number, since it uses less digits than its factorization.

79112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20402 (or 20389 counting only the distinct ones).

The product of its digits is 126, while the sum is 23.

The square root of 79112111 is about 8894.4989178705. The cubic root of 79112111 is about 429.2869216196.

The spelling of 79112111 in words is "seventy-nine million, one hundred twelve thousand, one hundred eleven".