856444 has 24 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 396720.

The previous prime is 856441. The next prime is 856459. The reversal of 856444 is 444658.

856444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4389 + ... + 4579.

It is an arithmetic number, because the mean of its divisors is an integer number (67200).

2⁸⁵⁶⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

856444 is a deficient number, since it is larger than the sum of its proper divisors (756356).

856444 is a wasteful number, since it uses less digits than its factorization.

856444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 271 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 856444 is about 925.4425968152. The cubic root of 856444 is about 94.9656015813.

The spelling of 856444 in words is "eight hundred fifty-six thousand, four hundred forty-four".