803844 has 36 divisors (see below), whose sum is σ = 2109744. Its totient is φ = 267624.

The previous prime is 803819. The next prime is 803849. The reversal of 803844 is 448308.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 803844.

It is not an unprimeable number, because it can be changed into a prime (803849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 559 + ... + 1385.

It is an arithmetic number, because the mean of its divisors is an integer number (58604).

2⁸⁰³⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 803844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054872).

803844 is an abundant number, since it is smaller than the sum of its proper divisors (1305900).

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

803844 is a wasteful number, since it uses less digits than its factorization.

803844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 803844 is about 896.5734771897. The cubic root of 803844 is about 92.9802247235.

The spelling of 803844 in words is "eight hundred three thousand, eight hundred forty-four".