79047657 has 56 divisors (see below), whose sum is σ = 134657600. Its totient is φ = 45979488.

The previous prime is 79047607. The next prime is 79047667. The reversal of 79047657 is 75674097.

It is not a de Polignac number, because 79047657 - 2⁶ = 79047593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79047607) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 179844 + ... + 180282.

It is an arithmetic number, because the mean of its divisors is an integer number (2404600).

Almost surely, 2^79047657 is an apocalyptic number.

It is an amenable number.

79047657 is a deficient number, since it is larger than the sum of its proper divisors (55609943).

79047657 is a wasteful number, since it uses less digits than its factorization.

79047657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 79047657 is about 8890.8749288245. The cubic root of 79047657 is about 429.1703074607.

It can be divided in two parts, 7904765 and 7, that multiplied together give a palindrome (55333355).

The spelling of 79047657 in words is "seventy-nine million, forty-seven thousand, six hundred fifty-seven".