849785939 has 2 divisors, whose sum is σ = 849785940. Its totient is φ = 849785938.

The previous prime is 849785933. The next prime is 849785977. The reversal of 849785939 is 939587948.

849785939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 849785939 - 2⁸ = 849785683 is a prime.

It is a super-2 number, since 2×849785939² = 1444272284244223442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (849785933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424892969 + 424892970.

It is an arithmetic number, because the mean of its divisors is an integer number (424892970).

Almost surely, 2^849785939 is an apocalyptic number.

849785939 is a deficient number, since it is larger than the sum of its proper divisors (1).

849785939 is an equidigital number, since it uses as much as digits as its factorization.

849785939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 62.

The square root of 849785939 is about 29151.0881272038. The cubic root of 849785939 is about 947.1887116132.

The spelling of 849785939 in words is "eight hundred forty-nine million, seven hundred eighty-five thousand, nine hundred thirty-nine".