4024443221 has 2 divisors, whose sum is σ = 4024443222. Its totient is φ = 4024443220.

The previous prime is 4024443209. The next prime is 4024443251. The reversal of 4024443221 is 1223444204.

It is a happy number.

4024443221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2807410225 + 1217032996 = 52985^2 + 34886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4024443221 is a prime.

It is a super-2 number, since 2×4024443221² = 32392286478105709682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4024443251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2012221610 + 2012221611.

It is an arithmetic number, because the mean of its divisors is an integer number (2012221611).

Almost surely, 2^4024443221 is an apocalyptic number.

It is an amenable number.

4024443221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4024443221 is an equidigital number, since it uses as much as digits as its factorization.

4024443221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 4024443221 is about 63438.4995172490. The cubic root of 4024443221 is about 1590.6279208384.

Adding to 4024443221 its reverse (1223444204), we get a palindrome (5247887425).

The spelling of 4024443221 in words is "four billion, twenty-four million, four hundred forty-three thousand, two hundred twenty-one".