12388679 has 4 divisors (see below), whose sum is σ = 12396384. Its totient is φ = 12380976.

The previous prime is 12388669. The next prime is 12388693. The reversal of 12388679 is 97688321.

12388679 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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97688321 = 307 ⋅318203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12388679 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388609) 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, 422 + ... + 4995.

It is an arithmetic number, because the mean of its divisors is an integer number (3099096).

Almost surely, 2^12388679 is an apocalyptic number.

12388679 is a deficient number, since it is larger than the sum of its proper divisors (7705).

12388679 is an equidigital number, since it uses as much as digits as its factorization.

12388679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704.

The product of its digits is 145152, while the sum is 44.

The square root of 12388679 is about 3519.7555312834. The cubic root of 12388679 is about 231.3884445892.

The spelling of 12388679 in words is "twelve million, three hundred eighty-eight thousand, six hundred seventy-nine".