79691742 has 64 divisors (see below), whose sum is σ = 193945920. Its totient is φ = 24105600.

The previous prime is 79691737. The next prime is 79691761. The reversal of 79691742 is 24719697.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41892 + ... + 43752.

It is an arithmetic number, because the mean of its divisors is an integer number (3030405).

Almost surely, 2^79691742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79691742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96972960).

79691742 is an abundant number, since it is smaller than the sum of its proper divisors (114254178).

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

79691742 is a wasteful number, since it uses less digits than its factorization.

79691742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1940 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 79691742 is about 8927.0231320413. The cubic root of 79691742 is about 430.3327908706.

The spelling of 79691742 in words is "seventy-nine million, six hundred ninety-one thousand, seven hundred forty-two".