844319321 has 4 divisors (see below), whose sum is σ = 888757200. Its totient is φ = 799881444.

The previous prime is 844319293. The next prime is 844319347. The reversal of 844319321 is 123913448.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 844319321 - 2¹⁴ = 844302937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844319381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22218911 + ... + 22218948.

It is an arithmetic number, because the mean of its divisors is an integer number (222189300).

Almost surely, 2^844319321 is an apocalyptic number.

It is an amenable number.

844319321 is a deficient number, since it is larger than the sum of its proper divisors (44437879).

844319321 is a wasteful number, since it uses less digits than its factorization.

844319321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44437878.

The product of its digits is 20736, while the sum is 35.

The square root of 844319321 is about 29057.1733140029. The cubic root of 844319321 is about 945.1532728255.

The spelling of 844319321 in words is "eight hundred forty-four million, three hundred nineteen thousand, three hundred twenty-one".