79672899 has 4 divisors (see below), whose sum is σ = 106230536. Its totient is φ = 53115264.

The previous prime is 79672867. The next prime is 79672919. The reversal of 79672899 is 99827697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99827697 = 3 ⋅33275899.

It is not a de Polignac number, because 79672899 - 2⁵ = 79672867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79672199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13278814 + ... + 13278819.

It is an arithmetic number, because the mean of its divisors is an integer number (26557634).

Almost surely, 2^79672899 is an apocalyptic number.

79672899 is a deficient number, since it is larger than the sum of its proper divisors (26557637).

79672899 is a wasteful number, since it uses less digits than its factorization.

79672899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26557636.

The product of its digits is 3429216, while the sum is 57.

The square root of 79672899 is about 8925.9676786329. The cubic root of 79672899 is about 430.2988710033.

The spelling of 79672899 in words is "seventy-nine million, six hundred seventy-two thousand, eight hundred ninety-nine".