4044323021 has 2 divisors, whose sum is σ = 4044323022. Its totient is φ = 4044323020.

The previous prime is 4044323009. The next prime is 4044323039. The reversal of 4044323021 is 1203234404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3266694025 + 777628996 = 57155^2 + 27886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4044323021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4044323081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022161510 + 2022161511.

It is an arithmetic number, because the mean of its divisors is an integer number (2022161511).

Almost surely, 2^4044323021 is an apocalyptic number.

It is an amenable number.

4044323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4044323021 is an equidigital number, since it uses as much as digits as its factorization.

4044323021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 4044323021 is about 63594.9921062972. The cubic root of 4044323021 is about 1593.2427289222.

Adding to 4044323021 its reverse (1203234404), we get a palindrome (5247557425).

The spelling of 4044323021 in words is "four billion, forty-four million, three hundred twenty-three thousand, twenty-one".