823944 has 32 divisors (see below), whose sum is σ = 2247840. Its totient is φ = 249600.

The previous prime is 823913. The next prime is 823961. The reversal of 823944 is 449328.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 823944.

It is an unprimeable number.

823944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297 + ... + 1824.

It is an arithmetic number, because the mean of its divisors is an integer number (70245).

2⁸²³⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

823944 is an abundant number, since it is smaller than the sum of its proper divisors (1423896).

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

823944 is a wasteful number, since it uses less digits than its factorization.

823944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3137 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 823944 is about 907.7136112233. The cubic root of 823944 is about 93.7488390967.

The spelling of 823944 in words is "eight hundred twenty-three thousand, nine hundred forty-four".