4404224221 has 4 divisors (see below), whose sum is σ = 4663296252. Its totient is φ = 4145152192.

The previous prime is 4404224203. The next prime is 4404224233. The reversal of 4404224221 is 1224224044.

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 1872725625 + 2531498596 = 43275^2 + 50314^2 .

It is a cyclic number.

It is not a de Polignac number, because 4404224221 - 2⁵ = 4404224189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4404224261) 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 3 ways as a sum of consecutive naturals, for example, 129535990 + ... + 129536023.

It is an arithmetic number, because the mean of its divisors is an integer number (1165824063).

Almost surely, 2^4404224221 is an apocalyptic number.

It is an amenable number.

4404224221 is a deficient number, since it is larger than the sum of its proper divisors (259072031).

4404224221 is a wasteful number, since it uses less digits than its factorization.

4404224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259072030.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 4404224221 is about 66364.3294323087. The cubic root of 4404224221 is about 1639.1667665242.

Adding to 4404224221 its reverse (1224224044), we get a palindrome (5628448265).

The spelling of 4404224221 in words is "four billion, four hundred four million, two hundred twenty-four thousand, two hundred twenty-one".