4444313021 has 2 divisors, whose sum is σ = 4444313022. Its totient is φ = 4444313020.

The previous prime is 4444313011. The next prime is 4444313143. The reversal of 4444313021 is 1203134444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4443688921 + 624100 = 66661^2 + 790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4444313021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4444313011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222156510 + 2222156511.

It is an arithmetic number, because the mean of its divisors is an integer number (2222156511).

Almost surely, 2^4444313021 is an apocalyptic number.

It is an amenable number.

4444313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4444313021 is an equidigital number, since it uses as much as digits as its factorization.

4444313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 4444313021 is about 66665.6809835465. The cubic root of 4444313021 is about 1644.1251768230.

Adding to 4444313021 its reverse (1203134444), we get a palindrome (5647447465).

The spelling of 4444313021 in words is "four billion, four hundred forty-four million, three hundred thirteen thousand, twenty-one".