12726947 has 4 divisors (see below), whose sum is σ = 12756120. Its totient is φ = 12697776.

The previous prime is 12726937. The next prime is 12726977. The reversal of 12726947 is 74962721.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12726947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12726947.

It is not an unprimeable number, because it can be changed into a prime (12726907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13922 + ... + 14807.

It is an arithmetic number, because the mean of its divisors is an integer number (3189030).

Almost surely, 2^12726947 is an apocalyptic number.

12726947 is a deficient number, since it is larger than the sum of its proper divisors (29173).

12726947 is an equidigital number, since it uses as much as digits as its factorization.

12726947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29172.

The product of its digits is 42336, while the sum is 38.

The square root of 12726947 is about 3567.4846881241. The cubic root of 12726947 is about 233.4755525273.

The spelling of 12726947 in words is "twelve million, seven hundred twenty-six thousand, nine hundred forty-seven".