12947423 has 4 divisors (see below), whose sum is σ = 13191768. Its totient is φ = 12703080.

The previous prime is 12947411. The next prime is 12947437. The reversal of 12947423 is 32474921.

12947423 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32474921 = 97 ⋅334793.

It is a cyclic number.

It is not a de Polignac number, because 12947423 - 2⁸ = 12947167 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 12947423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947443) 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, 122093 + ... + 122198.

It is an arithmetic number, because the mean of its divisors is an integer number (3297942).

Almost surely, 2^12947423 is an apocalyptic number.

12947423 is a deficient number, since it is larger than the sum of its proper divisors (244345).

12947423 is an equidigital number, since it uses as much as digits as its factorization.

12947423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244344.

The product of its digits is 12096, while the sum is 32.

The square root of 12947423 is about 3598.2527704429. The cubic root of 12947423 is about 234.8160504048.

The spelling of 12947423 in words is "twelve million, nine hundred forty-seven thousand, four hundred twenty-three".