444018324409 has 15 divisors (see below), whose sum is σ = 488505830485. Its totient is φ = 403579724020.

The previous prime is 444018324391. The next prime is 444018324427. The reversal of 444018324409 is 904423810444.

It is a happy number.

The square root of 444018324409 is 666347.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (444018324391) and next prime (444018324427).

It is not a de Polignac number, because 444018324409 - 2¹¹ = 444018322361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444018324499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 80625234 + ... + 80630740.

Almost surely, 2^444018324409 is an apocalyptic number.

444018324409 is the 666347-th square number.

444018324409 is the 333174-th centered octagonal number.

It is an amenable number.

444018324409 is a deficient number, since it is larger than the sum of its proper divisors (44487506076).

444018324409 is an frugal number, since it uses more digits than its factorization.

444018324409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11058 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 444018324409 in words is "four hundred forty-four billion, eighteen million, three hundred twenty-four thousand, four hundred nine".