14139387 has 8 divisors (see below), whose sum is σ = 20947280. Its totient is φ = 9426240.

The previous prime is 14139361. The next prime is 14139397. The reversal of 14139387 is 78393141.

It is a happy number.

14139387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14139387 - 2⁷ = 14139259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14139337) 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, 261814 + ... + 261867.

It is an arithmetic number, because the mean of its divisors is an integer number (2618410).

Almost surely, 2^14139387 is an apocalyptic number.

14139387 is a deficient number, since it is larger than the sum of its proper divisors (6807893).

14139387 is an equidigital number, since it uses as much as digits as its factorization.

14139387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523690 (or 523684 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 14139387 is about 3760.2376254700. The cubic root of 14139387 is about 241.8114495622.

The spelling of 14139387 in words is "fourteen million, one hundred thirty-nine thousand, three hundred eighty-seven".