855444 has 12 divisors (see below), whose sum is σ = 1996064. Its totient is φ = 285144.

The previous prime is 855431. The next prime is 855461. The reversal of 855444 is 444558.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

855444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35632 + ... + 35655.

2⁸⁵⁵⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

855444 is an abundant number, since it is smaller than the sum of its proper divisors (1140620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855444 is a wasteful number, since it uses less digits than its factorization.

855444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71294 (or 71292 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 855444 is about 924.9021569874. The cubic root of 855444 is about 94.9286259835.

The spelling of 855444 in words is "eight hundred fifty-five thousand, four hundred forty-four".