79439616 has 108 divisors (see below), whose sum is σ = 237713112. Its totient is φ = 26459136.

The previous prime is 79439609. The next prime is 79439617. The reversal of 79439616 is 61693497.

79439616 is nontrivially palindromic in base 15.

It is a tau number, because it is divible by the number of its divisors (108).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79439617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61570 + ... + 62846.

Almost surely, 2^79439616 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 79439616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118856556).

79439616 is an abundant number, since it is smaller than the sum of its proper divisors (158273496).

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

79439616 is an equidigital number, since it uses as much as digits as its factorization.

79439616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1282 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 79439616 is about 8912.8904402556. The cubic root of 79439616 is about 429.8784873887.

The spelling of 79439616 in words is "seventy-nine million, four hundred thirty-nine thousand, six hundred sixteen".