79639693 has 8 divisors (see below), whose sum is σ = 91071360. Its totient is φ = 68221680.

The previous prime is 79639687. The next prime is 79639699. The reversal of 79639693 is 39693697.

It is an interprime number because it is at equal distance from previous prime (79639687) and next prime (79639699).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79639693 - 2⁵ = 79639661 is a prime.

It is a super-2 number, since 2×79639693² = 12684961402268498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79639693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79639699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18408 + ... + 22318.

It is an arithmetic number, because the mean of its divisors is an integer number (11383920).

Almost surely, 2^79639693 is an apocalyptic number.

It is an amenable number.

79639693 is a deficient number, since it is larger than the sum of its proper divisors (11431667).

79639693 is a wasteful number, since it uses less digits than its factorization.

79639693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827.

The product of its digits is 1653372, while the sum is 52.

The square root of 79639693 is about 8924.1074063460. The cubic root of 79639693 is about 430.2390828360.

The spelling of 79639693 in words is "seventy-nine million, six hundred thirty-nine thousand, six hundred ninety-three".