12309983944439 has 4 divisors (see below), whose sum is σ = 12377994905640. Its totient is φ = 12241972983240.

The previous prime is 12309983944417. The next prime is 12309983944519. The reversal of 12309983944439 is 93444938990321.

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

It is a cyclic number.

It is not a de Polignac number, because 12309983944439 - 2²⁰ = 12309982895863 is a prime.

It is a super-2 number, since 2×12309983944439² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309983944939) 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 3 ways as a sum of consecutive naturals, for example, 34005480329 + ... + 34005480690.

It is an arithmetic number, because the mean of its divisors is an integer number (3094498726410).

Almost surely, 2^{12309983944439} is an apocalyptic number.

12309983944439 is a deficient number, since it is larger than the sum of its proper divisors (68010961201).

12309983944439 is an equidigital number, since it uses as much as digits as its factorization.

12309983944439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68010961200.

The product of its (nonzero) digits is 181398528, while the sum is 68.

The spelling of 12309983944439 in words is "twelve trillion, three hundred nine billion, nine hundred eighty-three million, nine hundred forty-four thousand, four hundred thirty-nine".