855239 has 16 divisors (see below), whose sum is σ = 1105920. Its totient is φ = 641760.

The previous prime is 855229. The next prime is 855241. The reversal of 855239 is 932558.

It is a happy number.

855239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-855239 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 (855229) 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, 2042 + ... + 2424.

It is an arithmetic number, because the mean of its divisors is an integer number (69120).

2⁸⁵⁵²³⁹ is an apocalyptic number.

855239 is a deficient number, since it is larger than the sum of its proper divisors (250681).

855239 is a wasteful number, since it uses less digits than its factorization.

855239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430.

The product of its digits is 10800, while the sum is 32.

The square root of 855239 is about 924.7913278140. The cubic root of 855239 is about 94.9210424272.

The spelling of 855239 in words is "eight hundred fifty-five thousand, two hundred thirty-nine".