80788979 has 2 divisors, whose sum is σ = 80788980. Its totient is φ = 80788978.

The previous prime is 80788937. The next prime is 80788999. The reversal of 80788979 is 97988708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80788979 - 2²⁰ = 79740403 is a prime.

It is not a weakly prime, because it can be changed into another prime (80788909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40394489 + 40394490.

It is an arithmetic number, because the mean of its divisors is an integer number (40394490).

Almost surely, 2^80788979 is an apocalyptic number.

80788979 is a deficient number, since it is larger than the sum of its proper divisors (1).

80788979 is an equidigital number, since it uses as much as digits as its factorization.

80788979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 56.

The square root of 80788979 is about 8988.2689657130. The cubic root of 80788979 is about 432.2988098297.

The spelling of 80788979 in words is "eighty million, seven hundred eighty-eight thousand, nine hundred seventy-nine".