12479689 has 4 divisors (see below), whose sum is σ = 12488656. Its totient is φ = 12470724.

The previous prime is 12479671. The next prime is 12479699. The reversal of 12479689 is 98697421.

12479689 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12479689 - 2⁹ = 12479177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12479699) 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, 1899 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (3122164).

Almost surely, 2^12479689 is an apocalyptic number.

It is an amenable number.

12479689 is a deficient number, since it is larger than the sum of its proper divisors (8967).

12479689 is an equidigital number, since it uses as much as digits as its factorization.

12479689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8966.

The product of its digits is 217728, while the sum is 46.

The square root of 12479689 is about 3532.6603289872. The cubic root of 12479689 is about 231.9536731220.

The spelling of 12479689 in words is "twelve million, four hundred seventy-nine thousand, six hundred eighty-nine".