79379797 has 4 divisors (see below), whose sum is σ = 90719776. Its totient is φ = 68039820.

The previous prime is 79379779. The next prime is 79379801. The reversal of 79379797 is 79797397.

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 79379797 - 2¹⁵ = 79347029 is a prime.

It is a super-2 number, since 2×79379797² = 12602304343522418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79379737) 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, 5669979 + ... + 5669992.

It is an arithmetic number, because the mean of its divisors is an integer number (22679944).

Almost surely, 2^79379797 is an apocalyptic number.

It is an amenable number.

79379797 is a deficient number, since it is larger than the sum of its proper divisors (11339979).

79379797 is a wasteful number, since it uses less digits than its factorization.

79379797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339978.

The product of its digits is 5250987, while the sum is 58.

The square root of 79379797 is about 8909.5340506673. The cubic root of 79379797 is about 429.7705590453.

The spelling of 79379797 in words is "seventy-nine million, three hundred seventy-nine thousand, seven hundred ninety-seven".