12386391 has 8 divisors (see below), whose sum is σ = 17048064. Its totient is φ = 7991160.

The previous prime is 12386389. The next prime is 12386399. The reversal of 12386391 is 19368321.

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

It is not a de Polignac number, because 12386391 - 2¹ = 12386389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12386399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66501 + ... + 66686.

It is an arithmetic number, because the mean of its divisors is an integer number (2131008).

Almost surely, 2^12386391 is an apocalyptic number.

12386391 is a deficient number, since it is larger than the sum of its proper divisors (4661673).

12386391 is a wasteful number, since it uses less digits than its factorization.

12386391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133221.

The product of its digits is 7776, while the sum is 33.

The square root of 12386391 is about 3519.4304937021. The cubic root of 12386391 is about 231.3741990737.

The spelling of 12386391 in words is "twelve million, three hundred eighty-six thousand, three hundred ninety-one".