9647971 has 4 divisors (see below), whose sum is σ = 10067472. Its totient is φ = 9228472.

The previous prime is 9647929. The next prime is 9647987. The reversal of 9647971 is 1797469.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9647971 - 2¹⁹ = 9123683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9647171) 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, 209716 + ... + 209761.

It is an arithmetic number, because the mean of its divisors is an integer number (2516868).

Almost surely, 2^9647971 is an apocalyptic number.

9647971 is a deficient number, since it is larger than the sum of its proper divisors (419501).

9647971 is a wasteful number, since it uses less digits than its factorization.

9647971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419500.

The product of its digits is 95256, while the sum is 43.

The square root of 9647971 is about 3106.1183171283. The cubic root of 9647971 is about 212.8851313307.

The spelling of 9647971 in words is "nine million, six hundred forty-seven thousand, nine hundred seventy-one".