79998872 has 32 divisors (see below), whose sum is σ = 162706320. Its totient is φ = 36725760.

The previous prime is 79998869. The next prime is 79998881. The reversal of 79998872 is 27889997.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598 + ... + 12749.

Almost surely, 2^79998872 is an apocalyptic number.

It is an amenable number.

79998872 is an abundant number, since it is smaller than the sum of its proper divisors (82707448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79998872 is a wasteful number, since it uses less digits than its factorization.

79998872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411 (or 14407 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 59.

The square root of 79998872 is about 8944.2088526599. The cubic root of 79998872 is about 430.8849128282.

The spelling of 79998872 in words is "seventy-nine million, nine hundred ninety-eight thousand, eight hundred seventy-two".