805844 has 12 divisors (see below), whose sum is σ = 1518804. Its totient is φ = 371904.

The previous prime is 805843. The next prime is 805853. The reversal of 805844 is 448508.

805844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 315844 = 700^2 + 562^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 805844.

It is not an unprimeable number, because it can be changed into a prime (805843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7697 + ... + 7800.

It is an arithmetic number, because the mean of its divisors is an integer number (126567).

2⁸⁰⁵⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

805844 is a deficient number, since it is larger than the sum of its proper divisors (712960).

805844 is a wasteful number, since it uses less digits than its factorization.

805844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514 (or 15512 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 805844 is about 897.6881418399. The cubic root of 805844 is about 93.0572738509.

Subtracting from 805844 its sum of digits (29), we obtain a triangular number (805815 = T₁₂₆₉).

The spelling of 805844 in words is "eight hundred five thousand, eight hundred forty-four".