853947 has 12 divisors (see below), whose sum is σ = 1241760. Its totient is φ = 565488.

The previous prime is 853933. The next prime is 853949. The reversal of 853947 is 749358.

It is not a de Polignac number, because 853947 - 2⁷ = 853819 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 853947.

It is not an unprimeable number, because it can be changed into a prime (853949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1953 + ... + 2349.

It is an arithmetic number, because the mean of its divisors is an integer number (103480).

2⁸⁵³⁹⁴⁷ is an apocalyptic number.

853947 is a deficient number, since it is larger than the sum of its proper divisors (387813).

853947 is a wasteful number, since it uses less digits than its factorization.

853947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 639 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 853947 is about 924.0925278347. The cubic root of 853947 is about 94.8732196180.

The spelling of 853947 in words is "eight hundred fifty-three thousand, nine hundred forty-seven".