808949039 has 2 divisors, whose sum is σ = 808949040. Its totient is φ = 808949038.

The previous prime is 808949021. The next prime is 808949069. The reversal of 808949039 is 930949808.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-808949039 is a 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 (808949069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404474519 + 404474520.

It is an arithmetic number, because the mean of its divisors is an integer number (404474520).

Almost surely, 2^808949039 is an apocalyptic number.

808949039 is a deficient number, since it is larger than the sum of its proper divisors (1).

808949039 is an equidigital number, since it uses as much as digits as its factorization.

808949039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 808949039 is about 28442.0294458746. The cubic root of 808949039 is about 931.7664192497.

The spelling of 808949039 in words is "eight hundred eight million, nine hundred forty-nine thousand, thirty-nine".