12439610089 has 3 divisors (see below), whose sum is σ = 12439721623. Its totient is φ = 12439498556.

The previous prime is 12439610083. The next prime is 12439610093. The reversal of 12439610089 is 98001693421.

It is a happy number.

The square root of 12439610089 is 111533.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 271755225 + 12167854864 = 16485^2 + 110308^2 .

It is not a de Polignac number, because 12439610089 - 2³ = 12439610081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12439610081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 55767 + ... + 167299.

Almost surely, 2^12439610089 is an apocalyptic number.

12439610089 is the 111533-rd square number.

12439610089 is the 55767-th centered octagonal number.

It is an amenable number.

12439610089 is a deficient number, since it is larger than the sum of its proper divisors (111534).

12439610089 is an frugal number, since it uses more digits than its factorization.

12439610089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223066 (or 111533 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 12439610089 in words is "twelve billion, four hundred thirty-nine million, six hundred ten thousand, eighty-nine".