79109679 has 12 divisors (see below), whose sum is σ = 115940888. Its totient is φ = 47945040.

The previous prime is 79109677. The next prime is 79109699. The reversal of 79109679 is 97690197.

It is not a de Polignac number, because 79109679 - 2¹ = 79109677 is a prime.

It is a super-2 number, since 2×79109679² = 12516682622966082, 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 (79109671) 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, 108604 + ... + 109329.

Almost surely, 2^79109679 is an apocalyptic number.

79109679 is a deficient number, since it is larger than the sum of its proper divisors (36831209).

79109679 is a wasteful number, since it uses less digits than its factorization.

79109679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217958 (or 217947 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 79109679 is about 8894.3622031037. The cubic root of 79109679 is about 429.2825226450.

The spelling of 79109679 in words is "seventy-nine million, one hundred nine thousand, six hundred seventy-nine".