441443221 has 2 divisors, whose sum is σ = 441443222. Its totient is φ = 441443220.

The previous prime is 441443213. The next prime is 441443227. The reversal of 441443221 is 122344144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365230321 + 76212900 = 19111^2 + 8730^2 .

It is a cyclic number.

It is not a de Polignac number, because 441443221 - 2³ = 441443213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441443227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220721610 + 220721611.

It is an arithmetic number, because the mean of its divisors is an integer number (220721611).

Almost surely, 2^441443221 is an apocalyptic number.

It is an amenable number.

441443221 is a deficient number, since it is larger than the sum of its proper divisors (1).

441443221 is an equidigital number, since it uses as much as digits as its factorization.

441443221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 441443221 is about 21010.5502307769. The cubic root of 441443221 is about 761.4211756244.

Adding to 441443221 its reverse (122344144), we get a palindrome (563787365).

The spelling of 441443221 in words is "four hundred forty-one million, four hundred forty-three thousand, two hundred twenty-one".