80259979 has 2 divisors, whose sum is σ = 80259980. Its totient is φ = 80259978.

The previous prime is 80259937. The next prime is 80259983. The reversal of 80259979 is 97995208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80259979 - 2¹⁷ = 80128907 is a prime.

It is not a weakly prime, because it can be changed into another prime (80259929) 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 as a sum of consecutive naturals, namely, 40129989 + 40129990.

It is an arithmetic number, because the mean of its divisors is an integer number (40129990).

Almost surely, 2^80259979 is an apocalyptic number.

80259979 is a deficient number, since it is larger than the sum of its proper divisors (1).

80259979 is an equidigital number, since it uses as much as digits as its factorization.

80259979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 80259979 is about 8958.7933897373. The cubic root of 80259979 is about 431.3531897855.

The spelling of 80259979 in words is "eighty million, two hundred fifty-nine thousand, nine hundred seventy-nine".