12786934 has 4 divisors (see below), whose sum is σ = 19180404. Its totient is φ = 6393466.

The previous prime is 12786913. The next prime is 12786937. The reversal of 12786934 is 43968721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43968721 = 5441 ⋅8081.

It is a super-3 number, since 3×12786934³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12786937) 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 as a sum of consecutive naturals, namely, 3196732 + ... + 3196735.

It is an arithmetic number, because the mean of its divisors is an integer number (4795101).

Almost surely, 2^12786934 is an apocalyptic number.

12786934 is a deficient number, since it is larger than the sum of its proper divisors (6393470).

12786934 is an equidigital number, since it uses as much as digits as its factorization.

12786934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6393469.

The product of its digits is 72576, while the sum is 40.

The square root of 12786934 is about 3575.8822687555. The cubic root of 12786934 is about 233.8417977594.

The spelling of 12786934 in words is "twelve million, seven hundred eighty-six thousand, nine hundred thirty-four".