80979773 has 4 divisors (see below), whose sum is σ = 92548320. Its totient is φ = 69411228.

The previous prime is 80979763. The next prime is 80979799. The reversal of 80979773 is 37797908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80979773 - 2⁶ = 80979709 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 (80979763) 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, 5784263 + ... + 5784276.

It is an arithmetic number, because the mean of its divisors is an integer number (23137080).

Almost surely, 2^80979773 is an apocalyptic number.

It is an amenable number.

80979773 is a deficient number, since it is larger than the sum of its proper divisors (11568547).

80979773 is a wasteful number, since it uses less digits than its factorization.

80979773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11568546.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 80979773 is about 8998.8762076161. The cubic root of 80979773 is about 432.6388528074.

The spelling of 80979773 in words is "eighty million, nine hundred seventy-nine thousand, seven hundred seventy-three".