853923856 has 20 divisors (see below), whose sum is σ = 1658996992. Its totient is φ = 425795616.

The previous prime is 853923841. The next prime is 853923857. The reversal of 853923856 is 658329358.

It is not an unprimeable number, because it can be changed into a prime (853923857) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 66840 + ... + 78583.

Almost surely, 2^853923856 is an apocalyptic number.

It is an amenable number.

853923856 is a deficient number, since it is larger than the sum of its proper divisors (805073136).

853923856 is a wasteful number, since it uses less digits than its factorization.

853923856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145798 (or 145792 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The square root of 853923856 is about 29221.9755663439. The cubic root of 853923856 is about 948.7236251342.

The spelling of 853923856 in words is "eight hundred fifty-three million, nine hundred twenty-three thousand, eight hundred fifty-six".