444623321 has 12 divisors (see below), whose sum is σ = 475099692. Its totient is φ = 416003328.

The previous prime is 444623303. The next prime is 444623357. The reversal of 444623321 is 123326444.

It can be written as a sum of positive squares in 6 ways, for example, as 47059600 + 397563721 = 6860^2 + 19939^2 .

It is not a de Polignac number, because 444623321 - 2¹⁴ = 444606937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444623521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45551 + ... + 54443.

It is an arithmetic number, because the mean of its divisors is an integer number (39591641).

Almost surely, 2^444623321 is an apocalyptic number.

It is an amenable number.

444623321 is a deficient number, since it is larger than the sum of its proper divisors (30476371).

444623321 is a wasteful number, since it uses less digits than its factorization.

444623321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9100 (or 9083 counting only the distinct ones).

The product of its digits is 13824, while the sum is 29.

The square root of 444623321 is about 21086.0930710267. The cubic root of 444623321 is about 763.2451959072.

Adding to 444623321 its reverse (123326444), we get a palindrome (567949765).

The spelling of 444623321 in words is "four hundred forty-four million, six hundred twenty-three thousand, three hundred twenty-one".