79657442 has 6 divisors (see below), whose sum is σ = 119505099. Its totient is φ = 39822410.

The previous prime is 79657397. The next prime is 79657451. The reversal of 79657442 is 24475697.

It can be written as a sum of positive squares in only one way, i.e., 39828721 + 39828721 = 6311^2 + 6311^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6311.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79657393 and 79657402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9467 + ... + 15777.

Almost surely, 2^79657442 is an apocalyptic number.

79657442 is a deficient number, since it is larger than the sum of its proper divisors (39847657).

79657442 is an frugal number, since it uses more digits than its factorization.

79657442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12624 (or 6313 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 79657442 is about 8925.1017921366. The cubic root of 79657442 is about 430.2710423861.

The spelling of 79657442 in words is "seventy-nine million, six hundred fifty-seven thousand, four hundred forty-two".