844389 has 24 divisors (see below), whose sum is σ = 1502592. Its totient is φ = 444960.

The previous prime is 844369. The next prime is 844421. The reversal of 844389 is 983448.

844389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 844389 - 2¹¹ = 842341 is a prime.

844389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304 + ... + 1334.

It is an arithmetic number, because the mean of its divisors is an integer number (62608).

2⁸⁴⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

844389 is a deficient number, since it is larger than the sum of its proper divisors (658203).

844389 is a wasteful number, since it uses less digits than its factorization.

844389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1054 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 844389 is about 918.9064152567. The cubic root of 844389 is about 94.5179272279.

The spelling of 844389 in words is "eight hundred forty-four thousand, three hundred eighty-nine".