444410221 has 4 divisors (see below), whose sum is σ = 444717532. Its totient is φ = 444102912.

The previous prime is 444410207. The next prime is 444410227. The reversal of 444410221 is 122014444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 361418121 + 82992100 = 19011^2 + 9110^2 .

It is a cyclic number.

It is not a de Polignac number, because 444410221 - 2⁵ = 444410189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444410192 and 444410201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444410227) 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 in 3 ways as a sum of consecutive naturals, for example, 151476 + ... + 154381.

It is an arithmetic number, because the mean of its divisors is an integer number (111179383).

Almost surely, 2^444410221 is an apocalyptic number.

It is an amenable number.

444410221 is a deficient number, since it is larger than the sum of its proper divisors (307311).

444410221 is a wasteful number, since it uses less digits than its factorization.

444410221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307310.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 444410221 is about 21081.0393719095. The cubic root of 444410221 is about 763.1232398339.

Adding to 444410221 its reverse (122014444), we get a palindrome (566424665).

The spelling of 444410221 in words is "four hundred forty-four million, four hundred ten thousand, two hundred twenty-one".