79891792 has 10 divisors (see below), whose sum is σ = 154790378. Its totient is φ = 39945888.

The previous prime is 79891783. The next prime is 79891793. The reversal of 79891792 is 29719897.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 254016 = 8924^2 + 504^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79891793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496603 + ... + 2496634.

Almost surely, 2^79891792 is an apocalyptic number.

It is an amenable number.

79891792 is a deficient number, since it is larger than the sum of its proper divisors (74898586).

79891792 is a wasteful number, since it uses less digits than its factorization.

79891792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993245 (or 4993239 counting only the distinct ones).

The product of its digits is 571536, while the sum is 52.

The square root of 79891792 is about 8938.2208520488. The cubic root of 79891792 is about 430.6925777920.

The spelling of 79891792 in words is "seventy-nine million, eight hundred ninety-one thousand, seven hundred ninety-two".