79644113 has 4 divisors (see below), whose sum is σ = 80271360. Its totient is φ = 79016868.

The previous prime is 79644109. The next prime is 79644157. The reversal of 79644113 is 31144697.

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 79644113 - 2² = 79644109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79644413) 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, 313433 + ... + 313686.

It is an arithmetic number, because the mean of its divisors is an integer number (20067840).

Almost surely, 2^79644113 is an apocalyptic number.

It is an amenable number.

79644113 is a deficient number, since it is larger than the sum of its proper divisors (627247).

79644113 is a wasteful number, since it uses less digits than its factorization.

79644113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627246.

The product of its digits is 18144, while the sum is 35.

The square root of 79644113 is about 8924.3550467247. The cubic root of 79644113 is about 430.2470421065.

The spelling of 79644113 in words is "seventy-nine million, six hundred forty-four thousand, one hundred thirteen".