444203221 has 24 divisors (see below), whose sum is σ = 559919360. Its totient is φ = 344947680.

The previous prime is 444203219. The next prime is 444203239. The reversal of 444203221 is 122302444.

It is a happy number.

It is not a de Polignac number, because 444203221 - 2¹ = 444203219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444203192 and 444203201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444203021) 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 23 ways as a sum of consecutive naturals, for example, 310135 + ... + 311563.

Almost surely, 2^444203221 is an apocalyptic number.

It is an amenable number.

444203221 is a deficient number, since it is larger than the sum of its proper divisors (115716139).

444203221 is a wasteful number, since it uses less digits than its factorization.

444203221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1814 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 444203221 is about 21076.1291749695. The cubic root of 444203221 is about 763.0047374265.

Adding to 444203221 its reverse (122302444), we get a palindrome (566505665).

The spelling of 444203221 in words is "four hundred forty-four million, two hundred three thousand, two hundred twenty-one".