79882257 has 32 divisors (see below), whose sum is σ = 135331840. Its totient is φ = 40772160.

The previous prime is 79882249. The next prime is 79882259. The reversal of 79882257 is 75228897.

It is not a de Polignac number, because 79882257 - 2³ = 79882249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79882259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3744 + ... + 13182.

It is an arithmetic number, because the mean of its divisors is an integer number (4229120).

Almost surely, 2^79882257 is an apocalyptic number.

It is an amenable number.

79882257 is a deficient number, since it is larger than the sum of its proper divisors (55449583).

79882257 is a wasteful number, since it uses less digits than its factorization.

79882257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9493.

The product of its digits is 564480, while the sum is 48.

The square root of 79882257 is about 8937.6874525797. The cubic root of 79882257 is about 430.6754428774.

The spelling of 79882257 in words is "seventy-nine million, eight hundred eighty-two thousand, two hundred fifty-seven".