321944 has 16 divisors (see below), whose sum is σ = 690000. Its totient is φ = 137952.

The previous prime is 321911. The next prime is 321947. The reversal of 321944 is 449123.

It is an Ulam number.

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 321944.

It is not an unprimeable number, because it can be changed into a prime (321947) by changing a digit.

321944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2819 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (43125).

2³²¹⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

321944 is an abundant number, since it is smaller than the sum of its proper divisors (368056).

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

321944 is a wasteful number, since it uses less digits than its factorization.

321944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762 (or 5758 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 321944 is about 567.4010927025. The cubic root of 321944 is about 68.5372663827.

The spelling of 321944 in words is "three hundred twenty-one thousand, nine hundred forty-four".