80727943 has 2 divisors, whose sum is σ = 80727944. Its totient is φ = 80727942.

The previous prime is 80727877. The next prime is 80727947. The reversal of 80727943 is 34972708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80727943 - 2⁹ = 80727431 is a prime.

It is a super-2 number, since 2×80727943² = 13034001562022498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80727896 and 80727905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80727947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40363971 + 40363972.

It is an arithmetic number, because the mean of its divisors is an integer number (40363972).

Almost surely, 2^80727943 is an apocalyptic number.

80727943 is a deficient number, since it is larger than the sum of its proper divisors (1).

80727943 is an equidigital number, since it uses as much as digits as its factorization.

80727943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 80727943 is about 8984.8730096758. The cubic root of 80727943 is about 432.1899152829.

The spelling of 80727943 in words is "eighty million, seven hundred twenty-seven thousand, nine hundred forty-three".