808043939 has 2 divisors, whose sum is σ = 808043940. Its totient is φ = 808043938.

The previous prime is 808043909. The next prime is 808043969. The reversal of 808043939 is 939340808.

It is a balanced prime because it is at equal distance from previous prime (808043909) and next prime (808043969).

It is a cyclic number.

It is not a de Polignac number, because 808043939 - 2⁸ = 808043683 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 808043939.

It is not a weakly prime, because it can be changed into another prime (808043909) 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, 404021969 + 404021970.

It is an arithmetic number, because the mean of its divisors is an integer number (404021970).

Almost surely, 2^808043939 is an apocalyptic number.

808043939 is a deficient number, since it is larger than the sum of its proper divisors (1).

808043939 is an equidigital number, since it uses as much as digits as its factorization.

808043939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 808043939 is about 28426.1136809097. The cubic root of 808043939 is about 931.4187844512.

The spelling of 808043939 in words is "eight hundred eight million, forty-three thousand, nine hundred thirty-nine".