853239 has 4 divisors (see below), whose sum is σ = 1137656. Its totient is φ = 568824.

The previous prime is 853217. The next prime is 853241. The reversal of 853239 is 932358.

It is a happy number.

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

It is not a de Polignac number, because 853239 - 2¹² = 849143 is a prime.

It is a super-2 number, since 2×853239² = 1456033582242, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142204 + ... + 142209.

It is an arithmetic number, because the mean of its divisors is an integer number (284414).

2⁸⁵³²³⁹ is an apocalyptic number.

853239 is a deficient number, since it is larger than the sum of its proper divisors (284417).

853239 is a wasteful number, since it uses less digits than its factorization.

853239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284416.

The product of its digits is 6480, while the sum is 30.

The square root of 853239 is about 923.7093698778. The cubic root of 853239 is about 94.8469928493.

The spelling of 853239 in words is "eight hundred fifty-three thousand, two hundred thirty-nine".