80397959 has 2 divisors, whose sum is σ = 80397960. Its totient is φ = 80397958.

The previous prime is 80397953. The next prime is 80397971. The reversal of 80397959 is 95979308.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80397959 is a prime.

It is a super-2 number, since 2×80397959² = 12927663622731362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80397953) 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, 40198979 + 40198980.

It is an arithmetic number, because the mean of its divisors is an integer number (40198980).

Almost surely, 2^80397959 is an apocalyptic number.

80397959 is a deficient number, since it is larger than the sum of its proper divisors (1).

80397959 is an equidigital number, since it uses as much as digits as its factorization.

80397959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 80397959 is about 8966.4908966663. The cubic root of 80397959 is about 431.6002371071.

The spelling of 80397959 in words is "eighty million, three hundred ninety-seven thousand, nine hundred fifty-nine".