4444443221 has 8 divisors (see below), whose sum is σ = 4466121600. Its totient is φ = 4422785040.

The previous prime is 4444443181. The next prime is 4444443233. The reversal of 4444443221 is 1223444444.

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 4444443221 - 2¹⁴ = 4444426837 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444443721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617240 + ... + 624398.

It is an arithmetic number, because the mean of its divisors is an integer number (558265200).

Almost surely, 2^4444443221 is an apocalyptic number.

It is an amenable number.

4444443221 is a deficient number, since it is larger than the sum of its proper divisors (21678379).

4444443221 is a wasteful number, since it uses less digits than its factorization.

4444443221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099.

The product of its digits is 49152, while the sum is 32.

The square root of 4444443221 is about 66666.6574908327. The cubic root of 4444443221 is about 1644.1412320233.

Adding to 4444443221 its reverse (1223444444), we get a palindrome (5667887665).

The spelling of 4444443221 in words is "four billion, four hundred forty-four million, four hundred forty-three thousand, two hundred twenty-one".