4334444021 has 2 divisors, whose sum is σ = 4334444022. Its totient is φ = 4334444020.

The previous prime is 4334444017. The next prime is 4334444041. The reversal of 4334444021 is 1204444334.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3783603121 + 550840900 = 61511^2 + 23470^2 .

It is a cyclic number.

It is not a de Polignac number, because 4334444021 - 2² = 4334444017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4334444041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2167222010 + 2167222011.

It is an arithmetic number, because the mean of its divisors is an integer number (2167222011).

Almost surely, 2^4334444021 is an apocalyptic number.

It is an amenable number.

4334444021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4334444021 is an equidigital number, since it uses as much as digits as its factorization.

4334444021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 4334444021 is about 65836.4945983609. The cubic root of 4334444021 is about 1630.4636944671.

Adding to 4334444021 its reverse (1204444334), we get a palindrome (5538888355).

The spelling of 4334444021 in words is "four billion, three hundred thirty-four million, four hundred forty-four thousand, twenty-one".