853939394 has 64 divisors (see below), whose sum is σ = 1668418560. Its totient is φ = 318050880.

The previous prime is 853939379. The next prime is 853939409. The reversal of 853939394 is 493939358.

It is an interprime number because it is at equal distance from previous prime (853939379) and next prime (853939409).

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 476969 + ... + 478755.

It is an arithmetic number, because the mean of its divisors is an integer number (26069040).

Almost surely, 2^853939394 is an apocalyptic number.

853939394 is a deficient number, since it is larger than the sum of its proper divisors (814479166).

853939394 is a wasteful number, since it uses less digits than its factorization.

853939394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943.

The product of its digits is 3149280, while the sum is 53.

The square root of 853939394 is about 29222.2414266942. The cubic root of 853939394 is about 948.7293794249.

The spelling of 853939394 in words is "eight hundred fifty-three million, nine hundred thirty-nine thousand, three hundred ninety-four".