4440343221 has 6 divisors (see below), whose sum is σ = 6413829110. Its totient is φ = 2960228808.

The previous prime is 4440343199. The next prime is 4440343247. The reversal of 4440343221 is 1223430444.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4234104900 + 206238321 = 65070^2 + 14361^2 .

It is not a de Polignac number, because 4440343221 - 2⁶ = 4440343157 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 (4440343261) 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 5 ways as a sum of consecutive naturals, for example, 246685726 + ... + 246685743.

Almost surely, 2^4440343221 is an apocalyptic number.

It is an amenable number.

4440343221 is a deficient number, since it is larger than the sum of its proper divisors (1973485889).

4440343221 is a wasteful number, since it uses less digits than its factorization.

4440343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493371475 (or 493371472 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 4440343221 is about 66635.9003916057. The cubic root of 4440343221 is about 1643.6355029116.

Adding to 4440343221 its reverse (1223430444), we get a palindrome (5663773665).

The spelling of 4440343221 in words is "four billion, four hundred forty million, three hundred forty-three thousand, two hundred twenty-one".