4444441321 has 4 divisors (see below), whose sum is σ = 4444588944. Its totient is φ = 4444293700.

The previous prime is 4444441289. The next prime is 4444441349. The reversal of 4444441321 is 1231444444.

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 4444441321 - 2⁵ = 4444441289 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4444441021) 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, 10615 + ... + 94876.

It is an arithmetic number, because the mean of its divisors is an integer number (1111147236).

Almost surely, 2^4444441321 is an apocalyptic number.

It is an amenable number.

4444441321 is a deficient number, since it is larger than the sum of its proper divisors (147623).

4444441321 is a wasteful number, since it uses less digits than its factorization.

4444441321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147622.

The product of its digits is 24576, while the sum is 31.

The square root of 4444441321 is about 66666.6432408292. The cubic root of 4444441321 is about 1644.1409977331.

Adding to 4444441321 its reverse (1231444444), we get a palindrome (5675885765).

The spelling of 4444441321 in words is "four billion, four hundred forty-four million, four hundred forty-one thousand, three hundred twenty-one".