79167979 has 4 divisors (see below), whose sum is σ = 86365080. Its totient is φ = 71970880.

The previous prime is 79167967. The next prime is 79168027. The reversal of 79167979 is 97976197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97976197 = 11 ⋅8906927.

It is a cyclic number.

It is not a de Polignac number, because 79167979 - 2⁵ = 79167947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79167919) 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, 3598534 + ... + 3598555.

It is an arithmetic number, because the mean of its divisors is an integer number (21591270).

Almost surely, 2^79167979 is an apocalyptic number.

79167979 is a deficient number, since it is larger than the sum of its proper divisors (7197101).

79167979 is a wasteful number, since it uses less digits than its factorization.

79167979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7197100.

The product of its digits is 1500282, while the sum is 55.

The square root of 79167979 is about 8897.6389564873. The cubic root of 79167979 is about 429.3879502234.

The spelling of 79167979 in words is "seventy-nine million, one hundred sixty-seven thousand, nine hundred seventy-nine".