851044 has 12 divisors (see below), whose sum is σ = 1501164. Its totient is φ = 422144.

The previous prime is 851041. The next prime is 851051. The reversal of 851044 is 440158.

It can be written as a sum of positive squares in 2 ways, for example, as 270400 + 580644 = 520^2 + 762^2 .

It is not an unprimeable number, because it can be changed into a prime (851041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229 + ... + 1324.

It is an arithmetic number, because the mean of its divisors is an integer number (125097).

2⁸⁵¹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

851044 is a deficient number, since it is larger than the sum of its proper divisors (650120).

851044 is a wasteful number, since it uses less digits than its factorization.

851044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 851044 is about 922.5204604777. The cubic root of 851044 is about 94.7655901276.

The spelling of 851044 in words is "eight hundred fifty-one thousand, forty-four".