2444444456789 has 4 divisors (see below), whose sum is σ = 2444711414124. Its totient is φ = 2444177499456.

The previous prime is 2444444456711. The next prime is 2444444456791. The reversal of 2444444456789 is 9876544444442.

2444444456789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1441608448900 + 1002836007889 = 1200670^2 + 1001417^2 .

It is a cyclic number.

It is not a de Polignac number, because 2444444456789 - 2⁸ = 2444444456533 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444444456989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133464932 + ... + 133483245.

It is an arithmetic number, because the mean of its divisors is an integer number (611177853531).

Almost surely, 2^{2444444456789} is an apocalyptic number.

It is an amenable number.

2444444456789 is a deficient number, since it is larger than the sum of its proper divisors (266957335).

2444444456789 is an equidigital number, since it uses as much as digits as its factorization.

2444444456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266957334.

The product of its digits is 495452160, while the sum is 65.

The spelling of 2444444456789 in words is "two trillion, four hundred forty-four billion, four hundred forty-four million, four hundred fifty-six thousand, seven hundred eighty-nine".