11443340989 has 2 divisors, whose sum is σ = 11443340990. Its totient is φ = 11443340988.

The previous prime is 11443340983. The next prime is 11443341001. The reversal of 11443340989 is 98904334411.

11443340989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6607251225 + 4836089764 = 81285^2 + 69542^2 .

It is a cyclic number.

It is not a de Polignac number, because 11443340989 - 2⁷ = 11443340861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11443340983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721670494 + 5721670495.

It is an arithmetic number, because the mean of its divisors is an integer number (5721670495).

Almost surely, 2^11443340989 is an apocalyptic number.

It is an amenable number.

11443340989 is a deficient number, since it is larger than the sum of its proper divisors (1).

11443340989 is an equidigital number, since it uses as much as digits as its factorization.

11443340989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 11443340989 in words is "eleven billion, four hundred forty-three million, three hundred forty thousand, nine hundred eighty-nine".