844844 has 48 divisors (see below), whose sum is σ = 1994496. Its totient is φ = 302400.

The previous prime is 844841. The next prime is 844847. The reversal of 844844 is 448448.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (844841) and next prime (844847).

It is a super-2 number, since 2×844844² = 1427522768672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 844844.

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 844844.

It is not an unprimeable number, because it can be changed into a prime (844841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3899 + ... + 4109.

It is an arithmetic number, because the mean of its divisors is an integer number (41552).

2⁸⁴⁴⁸⁴⁴ 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 844844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (997248).

844844 is an abundant number, since it is smaller than the sum of its proper divisors (1149652).

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

844844 is a wasteful number, since it uses less digits than its factorization.

844844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 244 counting only the distinct ones).

The product of its digits is 16384, while the sum is 32.

The square root of 844844 is about 919.1539588121. The cubic root of 844844 is about 94.5349012113.

The spelling of 844844 in words is "eight hundred forty-four thousand, eight hundred forty-four".