80039957 has 2 divisors, whose sum is σ = 80039958. Its totient is φ = 80039956.

The previous prime is 80039929. The next prime is 80039963. The reversal of 80039957 is 75993008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68574961 + 11464996 = 8281^2 + 3386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80039957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80039987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40019978 + 40019979.

It is an arithmetic number, because the mean of its divisors is an integer number (40019979).

Almost surely, 2^80039957 is an apocalyptic number.

It is an amenable number.

80039957 is a deficient number, since it is larger than the sum of its proper divisors (1).

80039957 is an equidigital number, since it uses as much as digits as its factorization.

80039957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 80039957 is about 8946.5052953653. The cubic root of 80039957 is about 430.9586633554.

The spelling of 80039957 in words is "eighty million, thirty-nine thousand, nine hundred fifty-seven".