441338561 has 2 divisors, whose sum is σ = 441338562. Its totient is φ = 441338560.

The previous prime is 441338551. The next prime is 441338587. The reversal of 441338561 is 165833144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224070961 + 217267600 = 14969^2 + 14740^2 .

It is a cyclic number.

It is not a de Polignac number, because 441338561 - 2⁶ = 441338497 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (441338551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220669280 + 220669281.

It is an arithmetic number, because the mean of its divisors is an integer number (220669281).

Almost surely, 2^441338561 is an apocalyptic number.

It is an amenable number.

441338561 is a deficient number, since it is larger than the sum of its proper divisors (1).

441338561 is an equidigital number, since it uses as much as digits as its factorization.

441338561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 441338561 is about 21008.0594296570. The cubic root of 441338561 is about 761.3609967724.

The spelling of 441338561 in words is "four hundred forty-one million, three hundred thirty-eight thousand, five hundred sixty-one".