79456879 has 4 divisors (see below), whose sum is σ = 83638840. Its totient is φ = 75274920.

The previous prime is 79456877. The next prime is 79456889. The reversal of 79456879 is 97865497.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79456879 - 2¹ = 79456877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79456877) 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, 2090952 + ... + 2090989.

It is an arithmetic number, because the mean of its divisors is an integer number (20909710).

Almost surely, 2^79456879 is an apocalyptic number.

79456879 is a deficient number, since it is larger than the sum of its proper divisors (4181961).

79456879 is a wasteful number, since it uses less digits than its factorization.

79456879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181960.

The product of its digits is 3810240, while the sum is 55.

The square root of 79456879 is about 8913.8588164722. The cubic root of 79456879 is about 429.9096240567.

The spelling of 79456879 in words is "seventy-nine million, four hundred fifty-six thousand, eight hundred seventy-nine".