444150221 has 2 divisors, whose sum is σ = 444150222. Its totient is φ = 444150220.

The previous prime is 444150209. The next prime is 444150269. The reversal of 444150221 is 122051444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262278025 + 181872196 = 16195^2 + 13486^2 .

It is a cyclic number.

It is not a de Polignac number, because 444150221 - 2¹⁰ = 444149197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444150281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222075110 + 222075111.

It is an arithmetic number, because the mean of its divisors is an integer number (222075111).

Almost surely, 2^444150221 is an apocalyptic number.

It is an amenable number.

444150221 is a deficient number, since it is larger than the sum of its proper divisors (1).

444150221 is an equidigital number, since it uses as much as digits as its factorization.

444150221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 444150221 is about 21074.8717908318. The cubic root of 444150221 is about 762.9743903109.

The spelling of 444150221 in words is "four hundred forty-four million, one hundred fifty thousand, two hundred twenty-one".