9928747 has 2 divisors, whose sum is σ = 9928748. Its totient is φ = 9928746.

The previous prime is 9928741. The next prime is 9928783. The reversal of 9928747 is 7478299.

It is a weak prime.

It is an emirp because it is prime and its reverse (7478299) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9928747 - 2³ = 9928739 is a prime.

It is a Chen prime.

9928747 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9928697 and 9928706.

It is not a weakly prime, because it can be changed into another prime (9928741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4964373 + 4964374.

It is an arithmetic number, because the mean of its divisors is an integer number (4964374).

Almost surely, 2^9928747 is an apocalyptic number.

9928747 is a deficient number, since it is larger than the sum of its proper divisors (1).

9928747 is an equidigital number, since it uses as much as digits as its factorization.

9928747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 9928747 is about 3150.9914312800. The cubic root of 9928747 is about 214.9305490479.

The spelling of 9928747 in words is "nine million, nine hundred twenty-eight thousand, seven hundred forty-seven".