444540413 has 2 divisors, whose sum is σ = 444540414. Its totient is φ = 444540412.

The previous prime is 444540331. The next prime is 444540517. The reversal of 444540413 is 314045444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444492889 + 47524 = 21083^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 444540413 - 2¹⁸ = 444278269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444543413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222270206 + 222270207.

It is an arithmetic number, because the mean of its divisors is an integer number (222270207).

Almost surely, 2^444540413 is an apocalyptic number.

It is an amenable number.

444540413 is a deficient number, since it is larger than the sum of its proper divisors (1).

444540413 is an equidigital number, since it uses as much as digits as its factorization.

444540413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 444540413 is about 21084.1270390785. The cubic root of 444540413 is about 763.1977527020.

Adding to 444540413 its reverse (314045444), we get a palindrome (758585857).

The spelling of 444540413 in words is "four hundred forty-four million, five hundred forty thousand, four hundred thirteen".