80948979 has 12 divisors (see below), whose sum is σ = 117052936. Its totient is φ = 53907552.

The previous prime is 80948969. The next prime is 80949041. The reversal of 80948979 is 97984908.

It is not a de Polignac number, because 80948979 - 2⁴ = 80948963 is a prime.

It is a super-2 number, since 2×80948979² = 13105474402284882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80948909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4944 + ... + 13650.

Almost surely, 2^80948979 is an apocalyptic number.

80948979 is a deficient number, since it is larger than the sum of its proper divisors (36103957).

80948979 is a wasteful number, since it uses less digits than its factorization.

80948979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746 (or 9743 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 80948979 is about 8997.1650535044. The cubic root of 80948979 is about 432.5840063134.

The spelling of 80948979 in words is "eighty million, nine hundred forty-eight thousand, nine hundred seventy-nine".