444343221 has 36 divisors (see below), whose sum is σ = 748255872. Its totient is φ = 253353744.

The previous prime is 444343051. The next prime is 444343231. The reversal of 444343221 is 122343444.

It is a happy number.

444343221 is a `hidden beast` number, since 4 + 4 + 434 + 3 + 221 = 666.

It is not a de Polignac number, because 444343221 - 2⁹ = 444342709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444343231) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 282780 + ... + 284346.

Almost surely, 2^444343221 is an apocalyptic number.

It is an amenable number.

444343221 is a deficient number, since it is larger than the sum of its proper divisors (303912651).

444343221 is a wasteful number, since it uses less digits than its factorization.

444343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2220 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 444343221 is about 21079.4502063028. The cubic root of 444343221 is about 763.0848880107.

Adding to 444343221 its reverse (122343444), we get a palindrome (566686665).

The spelling of 444343221 in words is "four hundred forty-four million, three hundred forty-three thousand, two hundred twenty-one".