853799939 has 2 divisors, whose sum is σ = 853799940. Its totient is φ = 853799938.

The previous prime is 853799929. The next prime is 853799953. The reversal of 853799939 is 939997358.

853799939 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 a de Polignac number, because none of the positive numbers 2^k-853799939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (853799929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426899969 + 426899970.

It is an arithmetic number, because the mean of its divisors is an integer number (426899970).

Almost surely, 2^853799939 is an apocalyptic number.

853799939 is a deficient number, since it is larger than the sum of its proper divisors (1).

853799939 is an equidigital number, since it uses as much as digits as its factorization.

853799939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16533720, while the sum is 62.

The square root of 853799939 is about 29219.8552186694. The cubic root of 853799939 is about 948.6777316306.

The spelling of 853799939 in words is "eight hundred fifty-three million, seven hundred ninety-nine thousand, nine hundred thirty-nine".