944144021 has 2 divisors, whose sum is σ = 944144022. Its totient is φ = 944144020.

The previous prime is 944143999. The next prime is 944144027. The reversal of 944144021 is 120441449.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724363396 + 219780625 = 26914^2 + 14825^2 .

It is an emirp because it is prime and its reverse (120441449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 944144021 - 2⁶ = 944143957 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 (944144027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472072010 + 472072011.

It is an arithmetic number, because the mean of its divisors is an integer number (472072011).

Almost surely, 2^944144021 is an apocalyptic number.

It is an amenable number.

944144021 is a deficient number, since it is larger than the sum of its proper divisors (1).

944144021 is an equidigital number, since it uses as much as digits as its factorization.

944144021 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 29.

The square root of 944144021 is about 30726.9266442318. The cubic root of 944144021 is about 981.0235110571.

The spelling of 944144021 in words is "nine hundred forty-four million, one hundred forty-four thousand, twenty-one".