444331321 has 8 divisors (see below), whose sum is σ = 534534080. Its totient is φ = 360810288.

The previous prime is 444331267. The next prime is 444331331. The reversal of 444331321 is 123133444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444331321 - 2¹³ = 444323129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444331331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1670286 + ... + 1670551.

It is an arithmetic number, because the mean of its divisors is an integer number (66816760).

Almost surely, 2^444331321 is an apocalyptic number.

It is an amenable number.

444331321 is a deficient number, since it is larger than the sum of its proper divisors (90202759).

444331321 is a wasteful number, since it uses less digits than its factorization.

444331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340863.

The product of its digits is 3456, while the sum is 25.

The square root of 444331321 is about 21079.1679389866. The cubic root of 444331321 is about 763.0780758658.

Adding to 444331321 its reverse (123133444), we get a palindrome (567464765).

It can be divided in two parts, 44433 and 1321, that added together give a palindrome (45754).

The spelling of 444331321 in words is "four hundred forty-four million, three hundred thirty-one thousand, three hundred twenty-one".