4424230721 has 2 divisors, whose sum is σ = 4424230722. Its totient is φ = 4424230720.

The previous prime is 4424230717. The next prime is 4424230777. The reversal of 4424230721 is 1270324244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3256300096 + 1167930625 = 57064^2 + 34175^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424230721 - 2² = 4424230717 is a prime.

It is not a weakly prime, because it can be changed into another prime (4424230121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2212115360 + 2212115361.

It is an arithmetic number, because the mean of its divisors is an integer number (2212115361).

Almost surely, 2^4424230721 is an apocalyptic number.

It is an amenable number.

4424230721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4424230721 is an equidigital number, since it uses as much as digits as its factorization.

4424230721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 4424230721 is about 66514.8909718719. The cubic root of 4424230721 is about 1641.6450280650.

Adding to 4424230721 its reverse (1270324244), we get a palindrome (5694554965).

The spelling of 4424230721 in words is "four billion, four hundred twenty-four million, two hundred thirty thousand, seven hundred twenty-one".