853940853 has 16 divisors (see below), whose sum is σ = 1266330240. Its totient is φ = 568739232.

The previous prime is 853940833. The next prime is 853940861. The reversal of 853940853 is 358049358.

It is a happy number.

It is not a de Polignac number, because 853940853 - 2⁸ = 853940597 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 853940799 and 853940808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853940833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13825 + ... + 43577.

It is an arithmetic number, because the mean of its divisors is an integer number (79145640).

Almost surely, 2^853940853 is an apocalyptic number.

It is an amenable number.

853940853 is a deficient number, since it is larger than the sum of its proper divisors (412389387).

853940853 is a wasteful number, since it uses less digits than its factorization.

853940853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30825 (or 30819 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 853940853 is about 29222.2663905454. The cubic root of 853940853 is about 948.7299197425.

The spelling of 853940853 in words is "eight hundred fifty-three million, nine hundred forty thousand, eight hundred fifty-three".