80072879 has 4 divisors (see below), whose sum is σ = 80194680. Its totient is φ = 79951080.

The previous prime is 80072849. The next prime is 80072891. The reversal of 80072879 is 97827008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80072879 - 2²⁰ = 79024303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80072849) 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, 59909 + ... + 61230.

It is an arithmetic number, because the mean of its divisors is an integer number (20048670).

Almost surely, 2^80072879 is an apocalyptic number.

80072879 is a deficient number, since it is larger than the sum of its proper divisors (121801).

80072879 is a wasteful number, since it uses less digits than its factorization.

80072879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121800.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 80072879 is about 8948.3450425204. The cubic root of 80072879 is about 431.0177424988.

The spelling of 80072879 in words is "eighty million, seventy-two thousand, eight hundred seventy-nine".