844 has 6 divisors (see below), whose sum is σ = 1484. Its totient is φ = 420.

The previous prime is 839. The next prime is 853. The reversal of 844 is 448.

Subtracting from 844 its sum of digits (16), we obtain a palindrome (828).

It can be divided in two parts, 84 and 4, that added together give a palindrome (88).

844 is nontrivially palindromic in base 14.

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

844 is a modest number, since divided by 44 gives 8 as remainder.

844 is a nontrivial repdigit in base 14.

It is a plaindrome in base 5, base 9, base 13, base 14 and base 16.

It is a nialpdrome in base 10 and base 14.

It is a zygodrome in base 14.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 102 + ... + 109.

2^{844} is an apocalyptic number.

It is an amenable number.

844 is a deficient number, since it is larger than the sum of its proper divisors (640).

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

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

The sum of its prime factors is 215 (or 213 counting only the distinct ones).

The product of its digits is 128, while the sum is 16.

The square root of 844 is about 29.0516780927. The cubic root of 844 is about 9.4503410569.

The spelling of 844 in words is "eight hundred forty-four", and thus it is an aban number.

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