9988747 has 2 divisors, whose sum is σ = 9988748. Its totient is φ = 9988746.

The previous prime is 9988733. The next prime is 9988753. The reversal of 9988747 is 7478899.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9988747 - 2¹¹ = 9986699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9988694 and 9988703.

It is not a weakly prime, because it can be changed into another prime (9988757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994373 + 4994374.

It is an arithmetic number, because the mean of its divisors is an integer number (4994374).

Almost surely, 2^9988747 is an apocalyptic number.

9988747 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988747 is an equidigital number, since it uses as much as digits as its factorization.

9988747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 52.

The square root of 9988747 is about 3160.4979038120. The cubic root of 9988747 is about 215.3626258261.

The spelling of 9988747 in words is "nine million, nine hundred eighty-eight thousand, seven hundred forty-seven".