79752129 has 16 divisors (see below), whose sum is σ = 109175040. Its totient is φ = 51766160.

The previous prime is 79752097. The next prime is 79752161. The reversal of 79752129 is 92125797.

It is an interprime number because it is at equal distance from previous prime (79752097) and next prime (79752161).

It is a cyclic number.

It is not a de Polignac number, because 79752129 - 2⁵ = 79752097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79750129) 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, 16834 + ... + 21044.

It is an arithmetic number, because the mean of its divisors is an integer number (6823440).

Almost surely, 2^79752129 is an apocalyptic number.

It is an amenable number.

79752129 is a deficient number, since it is larger than the sum of its proper divisors (29422911).

79752129 is a wasteful number, since it uses less digits than its factorization.

79752129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380.

The product of its digits is 79380, while the sum is 42.

The square root of 79752129 is about 8930.4047500659. The cubic root of 79752129 is about 430.4414593664.

The spelling of 79752129 in words is "seventy-nine million, seven hundred fifty-two thousand, one hundred twenty-nine".