79389317 has 4 divisors (see below), whose sum is σ = 90730656. Its totient is φ = 68047980.

The previous prime is 79389311. The next prime is 79389319. The reversal of 79389317 is 71398397.

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 79389317 - 2⁴ = 79389301 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 (79389311) 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, 5670659 + ... + 5670672.

It is an arithmetic number, because the mean of its divisors is an integer number (22682664).

Almost surely, 2^79389317 is an apocalyptic number.

It is an amenable number.

79389317 is a deficient number, since it is larger than the sum of its proper divisors (11341339).

79389317 is a wasteful number, since it uses less digits than its factorization.

79389317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11341338.

The product of its digits is 285768, while the sum is 47.

The square root of 79389317 is about 8910.0682937899. The cubic root of 79389317 is about 429.7877391185.

The spelling of 79389317 in words is "seventy-nine million, three hundred eighty-nine thousand, three hundred seventeen".