79992871 has 8 divisors (see below), whose sum is σ = 96798240. Its totient is φ = 64531968.

The previous prime is 79992863. The next prime is 79992881. The reversal of 79992871 is 17829997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79992871 - 2³ = 79992863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79992821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335986 + ... + 336223.

It is an arithmetic number, because the mean of its divisors is an integer number (12099780).

Almost surely, 2^79992871 is an apocalyptic number.

79992871 is a deficient number, since it is larger than the sum of its proper divisors (16805369).

79992871 is a wasteful number, since it uses less digits than its factorization.

79992871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672233.

The product of its digits is 571536, while the sum is 52.

The square root of 79992871 is about 8943.8733779051. The cubic root of 79992871 is about 430.8741384887.

The spelling of 79992871 in words is "seventy-nine million, nine hundred ninety-two thousand, eight hundred seventy-one".