2947147 has 8 divisors (see below), whose sum is σ = 3545600. Its totient is φ = 2393064.

The previous prime is 2947127. The next prime is 2947157. The reversal of 2947147 is 7417492.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2947147 is a prime.

It is a Duffinian number.

2947147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2947117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10947 + ... + 11212.

It is an arithmetic number, because the mean of its divisors is an integer number (443200).

2^2947147 is an apocalyptic number.

2947147 is a deficient number, since it is larger than the sum of its proper divisors (598453).

2947147 is a wasteful number, since it uses less digits than its factorization.

2947147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22185.

The product of its digits is 14112, while the sum is 34.

The square root of 2947147 is about 1716.7256624167. The cubic root of 2947147 is about 143.3729648236.

The spelling of 2947147 in words is "two million, nine hundred forty-seven thousand, one hundred forty-seven".