79639692 has 48 divisors (see below), whose sum is σ = 205027200. Its totient is φ = 23858560.

The previous prime is 79639687. The next prime is 79639699. The reversal of 79639692 is 29693697.

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 15 ways as a sum of consecutive naturals, for example, 8359 + ... + 15137.

It is an arithmetic number, because the mean of its divisors is an integer number (4271400).

Almost surely, 2^79639692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79639692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102513600).

79639692 is an abundant number, since it is smaller than the sum of its proper divisors (125387508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79639692 is a wasteful number, since it uses less digits than its factorization.

79639692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886 (or 6884 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 51.

The square root of 79639692 is about 8924.1073503180. The cubic root of 79639692 is about 430.2390810353.

The spelling of 79639692 in words is "seventy-nine million, six hundred thirty-nine thousand, six hundred ninety-two".