9938647 has 2 divisors, whose sum is σ = 9938648. Its totient is φ = 9938646.

The previous prime is 9938641. The next prime is 9938701. The reversal of 9938647 is 7468399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9938647 - 2⁷ = 9938519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9938597 and 9938606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9938641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969323 + 4969324.

It is an arithmetic number, because the mean of its divisors is an integer number (4969324).

Almost surely, 2^9938647 is an apocalyptic number.

9938647 is a deficient number, since it is larger than the sum of its proper divisors (1).

9938647 is an equidigital number, since it uses as much as digits as its factorization.

9938647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 9938647 is about 3152.5619740142. The cubic root of 9938647 is about 215.0019614027.

It can be divided in two parts, 9938 and 647, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 9938647 in words is "nine million, nine hundred thirty-eight thousand, six hundred forty-seven".