9687947 has 2 divisors, whose sum is σ = 9687948. Its totient is φ = 9687946.

The previous prime is 9687919. The next prime is 9687989. The reversal of 9687947 is 7497869.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7497869) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9687947 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9687895 and 9687904.

It is not a weakly prime, because it can be changed into another prime (9687647) 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 as a sum of consecutive naturals, namely, 4843973 + 4843974.

It is an arithmetic number, because the mean of its divisors is an integer number (4843974).

Almost surely, 2^9687947 is an apocalyptic number.

9687947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9687947 is an equidigital number, since it uses as much as digits as its factorization.

9687947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 50.

The square root of 9687947 is about 3112.5467064769. The cubic root of 9687947 is about 213.1787533079.

The spelling of 9687947 in words is "nine million, six hundred eighty-seven thousand, nine hundred forty-seven".