79888457 has 16 divisors (see below), whose sum is σ = 95261184. Its totient is φ = 66144000.

The previous prime is 79888451. The next prime is 79888469. The reversal of 79888457 is 75488897.

It is a cyclic number.

It is not a de Polignac number, because 79888457 - 2⁴ = 79888441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79888451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (5953824).

Almost surely, 2^79888457 is an apocalyptic number.

It is an amenable number.

79888457 is a deficient number, since it is larger than the sum of its proper divisors (15372727).

79888457 is a wasteful number, since it uses less digits than its factorization.

79888457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13840.

The product of its digits is 4515840, while the sum is 56.

The square root of 79888457 is about 8938.0342917221. The cubic root of 79888457 is about 430.6865847703.

The spelling of 79888457 in words is "seventy-nine million, eight hundred eighty-eight thousand, four hundred fifty-seven".