79112869 has 4 divisors (see below), whose sum is σ = 86304960. Its totient is φ = 71920780.

The previous prime is 79112857. The next prime is 79112879. The reversal of 79112869 is 96821197.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79112869 - 2⁷ = 79112741 is a prime.

It is a super-2 number, since 2×79112869² = 12517692082822322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79112879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3596029 + ... + 3596050.

It is an arithmetic number, because the mean of its divisors is an integer number (21576240).

Almost surely, 2^79112869 is an apocalyptic number.

It is an amenable number.

79112869 is a deficient number, since it is larger than the sum of its proper divisors (7192091).

79112869 is a wasteful number, since it uses less digits than its factorization.

79112869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7192090.

The product of its digits is 54432, while the sum is 43.

The square root of 79112869 is about 8894.5415283757. The cubic root of 79112869 is about 429.2882926631.

It can be divided in two parts, 791128 and 69, that added together give a palindrome (791197).

The spelling of 79112869 in words is "seventy-nine million, one hundred twelve thousand, eight hundred sixty-nine".