79172713 has 4 divisors (see below), whose sum is σ = 79190608. Its totient is φ = 79154820.

The previous prime is 79172699. The next prime is 79172759. The reversal of 79172713 is 31727197.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79172713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79178713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3070 + ... + 12952.

It is an arithmetic number, because the mean of its divisors is an integer number (19797652).

Almost surely, 2^79172713 is an apocalyptic number.

It is an amenable number.

79172713 is a deficient number, since it is larger than the sum of its proper divisors (17895).

79172713 is an equidigital number, since it uses as much as digits as its factorization.

79172713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17894.

The product of its digits is 18522, while the sum is 37.

The square root of 79172713 is about 8897.9049781395. The cubic root of 79172713 is about 429.3965087427.

The spelling of 79172713 in words is "seventy-nine million, one hundred seventy-two thousand, seven hundred thirteen".