853943 has 4 divisors (see below), whose sum is σ = 872160. Its totient is φ = 835728.

The previous prime is 853933. The next prime is 853949. The reversal of 853943 is 349358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349358 = 2 ⋅174679.

It is a cyclic number.

It is not a de Polignac number, because 853943 - 2⁸ = 853687 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 9038 + ... + 9131.

It is an arithmetic number, because the mean of its divisors is an integer number (218040).

2⁸⁵³⁹⁴³ is an apocalyptic number.

853943 is a deficient number, since it is larger than the sum of its proper divisors (18217).

853943 is a wasteful number, since it uses less digits than its factorization.

853943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216.

The product of its digits is 12960, while the sum is 32.

The square root of 853943 is about 924.0903635468. The cubic root of 853943 is about 94.8730714849.

The spelling of 853943 in words is "eight hundred fifty-three thousand, nine hundred forty-three".