79130197 has 4 divisors (see below), whose sum is σ = 81682816. Its totient is φ = 76577580.

The previous prime is 79130159. The next prime is 79130239. The reversal of 79130197 is 79103197.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79103197 = 4373 ⋅18089.

It is a cyclic number.

It is not a de Polignac number, because 79130197 - 2⁷ = 79130069 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 (79130137) 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, 1276263 + ... + 1276324.

It is an arithmetic number, because the mean of its divisors is an integer number (20420704).

Almost surely, 2^79130197 is an apocalyptic number.

It is an amenable number.

79130197 is a deficient number, since it is larger than the sum of its proper divisors (2552619).

79130197 is a wasteful number, since it uses less digits than its factorization.

79130197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552618.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 79130197 is about 8895.5155556044. The cubic root of 79130197 is about 429.3196325475.

Subtracting from 79130197 its reverse (79103197), we obtain a cube (27000 = 30³).

The spelling of 79130197 in words is "seventy-nine million, one hundred thirty thousand, one hundred ninety-seven".