444423324509 has 2 divisors, whose sum is σ = 444423324510. Its totient is φ = 444423324508.

The previous prime is 444423324431. The next prime is 444423324547. The reversal of 444423324509 is 905423324444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 337508712025 + 106914612484 = 580955^2 + 326978^2 .

It is a cyclic number.

It is not a de Polignac number, because 444423324509 - 2⁸ = 444423324253 is a prime.

It is a super-3 number, since 3×444423324509³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 444423324509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444423374509) 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 as a sum of consecutive naturals, namely, 222211662254 + 222211662255.

It is an arithmetic number, because the mean of its divisors is an integer number (222211662255).

Almost surely, 2^444423324509 is an apocalyptic number.

It is an amenable number.

444423324509 is a deficient number, since it is larger than the sum of its proper divisors (1).

444423324509 is an equidigital number, since it uses as much as digits as its factorization.

444423324509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 44.

The spelling of 444423324509 in words is "four hundred forty-four billion, four hundred twenty-three million, three hundred twenty-four thousand, five hundred nine".