8147147 has 2 divisors, whose sum is σ = 8147148. Its totient is φ = 8147146.

The previous prime is 8147137. The next prime is 8147159. The reversal of 8147147 is 7417418.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8147147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8147137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4073573 + 4073574.

It is an arithmetic number, because the mean of its divisors is an integer number (4073574).

Almost surely, 2^8147147 is an apocalyptic number.

8147147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8147147 is an equidigital number, since it uses as much as digits as its factorization.

8147147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 8147147 is about 2854.3207598306. The cubic root of 8147147 is about 201.2187827561.

It can be divided in two parts, 81471 and 47, that added together give a palindrome (81518).

The spelling of 8147147 in words is "eight million, one hundred forty-seven thousand, one hundred forty-seven".