12147347 has 4 divisors (see below), whose sum is σ = 12166440. Its totient is φ = 12128256.

The previous prime is 12147341. The next prime is 12147353. The reversal of 12147347 is 74374121.

12147347 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.

It is an interprime number because it is at equal distance from previous prime (12147341) and next prime (12147353).

It is a cyclic number.

It is not a de Polignac number, because 12147347 - 2⁶ = 12147283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12147341) 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 in 3 ways as a sum of consecutive naturals, for example, 8558 + ... + 9875.

It is an arithmetic number, because the mean of its divisors is an integer number (3041610).

Almost surely, 2^12147347 is an apocalyptic number.

12147347 is a deficient number, since it is larger than the sum of its proper divisors (19093).

12147347 is an equidigital number, since it uses as much as digits as its factorization.

12147347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19092.

The product of its digits is 4704, while the sum is 29.

The square root of 12147347 is about 3485.3044343357. The cubic root of 12147347 is about 229.8760958340.

The spelling of 12147347 in words is "twelve million, one hundred forty-seven thousand, three hundred forty-seven".