12386639 has 8 divisors (see below), whose sum is σ = 12828672. Its totient is φ = 11947320.

The previous prime is 12386611. The next prime is 12386657. The reversal of 12386639 is 93668321.

12386639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12386639 - 2¹² = 12382543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12386669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13922 + ... + 14784.

It is an arithmetic number, because the mean of its divisors is an integer number (1603584).

Almost surely, 2^12386639 is an apocalyptic number.

12386639 is a deficient number, since it is larger than the sum of its proper divisors (442033).

12386639 is an equidigital number, since it uses as much as digits as its factorization.

12386639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357.

The product of its digits is 46656, while the sum is 38.

The square root of 12386639 is about 3519.4657264988. The cubic root of 12386639 is about 231.3757432528.

The spelling of 12386639 in words is "twelve million, three hundred eighty-six thousand, six hundred thirty-nine".