805057039 has 2 divisors, whose sum is σ = 805057040. Its totient is φ = 805057038.

The previous prime is 805057027. The next prime is 805057061. The reversal of 805057039 is 930750508.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805057039 - 2⁷ = 805056911 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 805056989 and 805057007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805057009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402528519 + 402528520.

It is an arithmetic number, because the mean of its divisors is an integer number (402528520).

Almost surely, 2^805057039 is an apocalyptic number.

805057039 is a deficient number, since it is larger than the sum of its proper divisors (1).

805057039 is an equidigital number, since it uses as much as digits as its factorization.

805057039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 805057039 is about 28373.5270807138. The cubic root of 805057039 is about 930.2697175067.

The spelling of 805057039 in words is "eight hundred five million, fifty-seven thousand, thirty-nine".