870444 has 18 divisors (see below), whose sum is σ = 2200380. Its totient is φ = 290136.

The previous prime is 870437. The next prime is 870461. The reversal of 870444 is 444078.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12054 + ... + 12125.

2⁸⁷⁰⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

870444 is an abundant number, since it is smaller than the sum of its proper divisors (1329936).

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

870444 is a wasteful number, since it uses less digits than its factorization.

870444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24189 (or 24184 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 870444 is about 932.9758839327. The cubic root of 870444 is about 95.4802641892.

The spelling of 870444 in words is "eight hundred seventy thousand, four hundred forty-four".