441323261 has 2 divisors, whose sum is σ = 441323262. Its totient is φ = 441323260.

The previous prime is 441323251. The next prime is 441323329. The reversal of 441323261 is 162323144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435515161 + 5808100 = 20869^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 441323261 - 2²² = 437128957 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 441323261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441323231) 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, 220661630 + 220661631.

It is an arithmetic number, because the mean of its divisors is an integer number (220661631).

Almost surely, 2^441323261 is an apocalyptic number.

It is an amenable number.

441323261 is a deficient number, since it is larger than the sum of its proper divisors (1).

441323261 is an equidigital number, since it uses as much as digits as its factorization.

441323261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 441323261 is about 21007.6952805395. The cubic root of 441323261 is about 761.3521985700.

The spelling of 441323261 in words is "four hundred forty-one million, three hundred twenty-three thousand, two hundred sixty-one".