4440524221 has 4 divisors (see below), whose sum is σ = 5074884832. Its totient is φ = 3806163612.

The previous prime is 4440524201. The next prime is 4440524251. The reversal of 4440524221 is 1224250444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4440524221 - 2²⁷ = 4306306493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4440524221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440524201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317180295 + ... + 317180308.

It is an arithmetic number, because the mean of its divisors is an integer number (1268721208).

Almost surely, 2^4440524221 is an apocalyptic number.

It is an amenable number.

4440524221 is a deficient number, since it is larger than the sum of its proper divisors (634360611).

4440524221 is an equidigital number, since it uses as much as digits as its factorization.

4440524221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634360610.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 4440524221 is about 66637.2585045333. The cubic root of 4440524221 is about 1643.6578355684.

Adding to 4440524221 its reverse (1224250444), we get a palindrome (5664774665).

The spelling of 4440524221 in words is "four billion, four hundred forty million, five hundred twenty-four thousand, two hundred twenty-one".