12388039 has 4 divisors (see below), whose sum is σ = 12405456. Its totient is φ = 12370624.

The previous prime is 12388037. The next prime is 12388049. The reversal of 12388039 is 93088321.

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 12388039 - 2¹ = 12388037 is a prime.

It is a super-3 number, since 3×12388039³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12387995 and 12388013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7594 + ... + 9079.

It is an arithmetic number, because the mean of its divisors is an integer number (3101364).

Almost surely, 2^12388039 is an apocalyptic number.

12388039 is a deficient number, since it is larger than the sum of its proper divisors (17417).

12388039 is an equidigital number, since it uses as much as digits as its factorization.

12388039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17416.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 12388039 is about 3519.6646147041. The cubic root of 12388039 is about 231.3844600063.

The spelling of 12388039 in words is "twelve million, three hundred eighty-eight thousand, thirty-nine".