80881979 has 8 divisors (see below), whose sum is σ = 82425840. Its totient is φ = 79344000.

The previous prime is 80881973. The next prime is 80881987. The reversal of 80881979 is 97918808.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80881979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80881973) by changing a digit.

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, 34319 + ... + 36599.

It is an arithmetic number, because the mean of its divisors is an integer number (10303230).

Almost surely, 2^80881979 is an apocalyptic number.

80881979 is a deficient number, since it is larger than the sum of its proper divisors (1543861).

80881979 is a wasteful number, since it uses less digits than its factorization.

80881979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 80881979 is about 8993.4408876692. The cubic root of 80881979 is about 432.4646260621.

The spelling of 80881979 in words is "eighty million, eight hundred eighty-one thousand, nine hundred seventy-nine".