844398 has 32 divisors (see below), whose sum is σ = 1977600. Its totient is φ = 266328.

The previous prime is 844369. The next prime is 844421. The reversal of 844398 is 893448.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 615 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (61800).

2⁸⁴⁴³⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988800).

844398 is an abundant number, since it is smaller than the sum of its proper divisors (1133202).

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

844398 is a wasteful number, since it uses less digits than its factorization.

844398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 847 counting only the distinct ones).

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

The square root of 844398 is about 918.9113123692. The cubic root of 844398 is about 94.5182630362.

The spelling of 844398 in words is "eight hundred forty-four thousand, three hundred ninety-eight".