80043239 has 2 divisors, whose sum is σ = 80043240. Its totient is φ = 80043238.

The previous prime is 80043233. The next prime is 80043287. The reversal of 80043239 is 93234008.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80043239 is a prime.

It is a super-2 number, since 2×80043239² = 12813840219222242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80043233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40021619 + 40021620.

It is an arithmetic number, because the mean of its divisors is an integer number (40021620).

Almost surely, 2^80043239 is an apocalyptic number.

80043239 is a deficient number, since it is larger than the sum of its proper divisors (1).

80043239 is an equidigital number, since it uses as much as digits as its factorization.

80043239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 80043239 is about 8946.6887170617. The cubic root of 80043239 is about 430.9645536926.

The spelling of 80043239 in words is "eighty million, forty-three thousand, two hundred thirty-nine".