444344561 has 2 divisors, whose sum is σ = 444344562. Its totient is φ = 444344560.

The previous prime is 444344539. The next prime is 444344569. The reversal of 444344561 is 165443444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254593936 + 189750625 = 15956^2 + 13775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444344561 is a prime.

It is not a weakly prime, because it can be changed into another prime (444344569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222172280 + 222172281.

It is an arithmetic number, because the mean of its divisors is an integer number (222172281).

Almost surely, 2^444344561 is an apocalyptic number.

It is an amenable number.

444344561 is a deficient number, since it is larger than the sum of its proper divisors (1).

444344561 is an equidigital number, since it uses as much as digits as its factorization.

444344561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 35.

The square root of 444344561 is about 21079.4819907891. The cubic root of 444344561 is about 763.0856550850.

The spelling of 444344561 in words is "four hundred forty-four million, three hundred forty-four thousand, five hundred sixty-one".