9888947 has 2 divisors, whose sum is σ = 9888948. Its totient is φ = 9888946.

The previous prime is 9888943. The next prime is 9888961. The reversal of 9888947 is 7498889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9888947 - 2² = 9888943 is a prime.

It is not a weakly prime, because it can be changed into another prime (9888943) 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, 4944473 + 4944474.

It is an arithmetic number, because the mean of its divisors is an integer number (4944474).

Almost surely, 2^9888947 is an apocalyptic number.

9888947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9888947 is an equidigital number, since it uses as much as digits as its factorization.

9888947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 53.

The square root of 9888947 is about 3144.6696169868. The cubic root of 9888947 is about 214.6429769626.

The spelling of 9888947 in words is "nine million, eight hundred eighty-eight thousand, nine hundred forty-seven".