12939814 has 8 divisors (see below), whose sum is σ = 19450728. Its totient is φ = 6456240.

The previous prime is 12939811. The next prime is 12939827. The reversal of 12939814 is 41893921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939811) 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 3 ways as a sum of consecutive naturals, for example, 5607 + ... + 7570.

It is an arithmetic number, because the mean of its divisors is an integer number (2431341).

Almost surely, 2^12939814 is an apocalyptic number.

12939814 is a deficient number, since it is larger than the sum of its proper divisors (6510914).

12939814 is a wasteful number, since it uses less digits than its factorization.

12939814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13670.

The product of its digits is 15552, while the sum is 37.

The square root of 12939814 is about 3597.1952963385. The cubic root of 12939814 is about 234.7700421387.

The spelling of 12939814 in words is "twelve million, nine hundred thirty-nine thousand, eight hundred fourteen".