851944 has 16 divisors (see below), whose sum is σ = 1613700. Its totient is φ = 421632.

The previous prime is 851899. The next prime is 851953. The reversal of 851944 is 449158.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 743044 + 108900 = 862^2 + 330^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384 + ... + 1360.

2⁸⁵¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

851944 is a deficient number, since it is larger than the sum of its proper divisors (761756).

851944 is a wasteful number, since it uses less digits than its factorization.

851944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1088 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 851944 is about 923.0081256414. The cubic root of 851944 is about 94.7989840076.

The spelling of 851944 in words is "eight hundred fifty-one thousand, nine hundred forty-four".