12943747 has 4 divisors (see below), whose sum is σ = 13293616. Its totient is φ = 12593880.

The previous prime is 12943739. The next prime is 12943751. The reversal of 12943747 is 74734921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74734921 = 439 ⋅170239.

It is a cyclic number.

It is not a de Polignac number, because 12943747 - 2³ = 12943739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 349831 = 12943747 / (1 + 2 + 9 + 4 + 3 + 7 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12943247) 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, 174879 + ... + 174952.

It is an arithmetic number, because the mean of its divisors is an integer number (3323404).

Almost surely, 2^12943747 is an apocalyptic number.

12943747 is a deficient number, since it is larger than the sum of its proper divisors (349869).

12943747 is an equidigital number, since it uses as much as digits as its factorization.

12943747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349868.

The product of its digits is 42336, while the sum is 37.

The square root of 12943747 is about 3597.7419307115. The cubic root of 12943747 is about 234.7938255058.

It can be divided in two parts, 1294 and 3747, that added together give a square (5041 = 71²).

The spelling of 12943747 in words is "twelve million, nine hundred forty-three thousand, seven hundred forty-seven".