853871 has 4 divisors (see below), whose sum is σ = 859152. Its totient is φ = 848592.

The previous prime is 853843. The next prime is 853873. The reversal of 853871 is 178358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 853871 - 2⁶ = 853807 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 (853873) 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, 2390 + ... + 2723.

It is an arithmetic number, because the mean of its divisors is an integer number (214788).

2⁸⁵³⁸⁷¹ is an apocalyptic number.

853871 is a deficient number, since it is larger than the sum of its proper divisors (5281).

853871 is a wasteful number, since it uses less digits than its factorization.

853871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280.

The product of its digits is 6720, while the sum is 32.

The square root of 853871 is about 924.0514054965. The cubic root of 853871 is about 94.8704050098.

The spelling of 853871 in words is "eight hundred fifty-three thousand, eight hundred seventy-one".