12489589727 has 4 divisors (see below), whose sum is σ = 12490531296. Its totient is φ = 12488648160.

The previous prime is 12489589687. The next prime is 12489589747. The reversal of 12489589727 is 72798598421.

12489589727 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 is a cyclic number.

It is not a de Polignac number, because 12489589727 - 2¹⁰ = 12489588703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12489589727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489589747) 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 in 3 ways as a sum of consecutive naturals, for example, 450599 + ... + 477512.

It is an arithmetic number, because the mean of its divisors is an integer number (3122632824).

Almost surely, 2^12489589727 is an apocalyptic number.

12489589727 is a deficient number, since it is larger than the sum of its proper divisors (941569).

12489589727 is an equidigital number, since it uses as much as digits as its factorization.

12489589727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941568.

The product of its digits is 20321280, while the sum is 62.

The spelling of 12489589727 in words is "twelve billion, four hundred eighty-nine million, five hundred eighty-nine thousand, seven hundred twenty-seven".