79197213 has 4 divisors (see below), whose sum is σ = 105596288. Its totient is φ = 52798140.

The previous prime is 79197193. The next prime is 79197221. The reversal of 79197213 is 31279197.

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 not a de Polignac number, because 79197213 - 2¹⁰ = 79196189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79197413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13199533 + ... + 13199538.

It is an arithmetic number, because the mean of its divisors is an integer number (26399072).

Almost surely, 2^79197213 is an apocalyptic number.

It is an amenable number.

79197213 is a deficient number, since it is larger than the sum of its proper divisors (26399075).

79197213 is a wasteful number, since it uses less digits than its factorization.

79197213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26399074.

The product of its digits is 23814, while the sum is 39.

The square root of 79197213 is about 8899.2816002192. The cubic root of 79197213 is about 429.4407964318.

The spelling of 79197213 in words is "seventy-nine million, one hundred ninety-seven thousand, two hundred thirteen".