44403221 has 4 divisors (see below), whose sum is σ = 44810700. Its totient is φ = 43995744.

The previous prime is 44403193. The next prime is 44403299. The reversal of 44403221 is 12230444.

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 39062500 + 5340721 = 6250^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 44403221 - 2⁶ = 44403157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44403193 and 44403202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44403721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203576 + ... + 203793.

It is an arithmetic number, because the mean of its divisors is an integer number (11202675).

Almost surely, 2^44403221 is an apocalyptic number.

It is an amenable number.

44403221 is a deficient number, since it is larger than the sum of its proper divisors (407479).

44403221 is a wasteful number, since it uses less digits than its factorization.

44403221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407478.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 44403221 is about 6663.5741910779. The cubic root of 44403221 is about 354.1099730675.

Adding to 44403221 its reverse (12230444), we get a palindrome (56633665).

The spelling of 44403221 in words is "forty-four million, four hundred three thousand, two hundred twenty-one".