12947147 has 8 divisors (see below), whose sum is σ = 13228176. Its totient is φ = 12668832.

The previous prime is 12947141. The next prime is 12947159. The reversal of 12947147 is 74174921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12947147 - 2⁴ = 12947131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12947141) 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 7 ways as a sum of consecutive naturals, for example, 11033 + ... + 12149.

It is an arithmetic number, because the mean of its divisors is an integer number (1653522).

Almost surely, 2^12947147 is an apocalyptic number.

12947147 is a deficient number, since it is larger than the sum of its proper divisors (281029).

12947147 is a wasteful number, since it uses less digits than its factorization.

12947147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357.

The product of its digits is 14112, while the sum is 35.

The square root of 12947147 is about 3598.2144182914. The cubic root of 12947147 is about 234.8143818697.

The spelling of 12947147 in words is "twelve million, nine hundred forty-seven thousand, one hundred forty-seven".