9247939 has 2 divisors, whose sum is σ = 9247940. Its totient is φ = 9247938.

The previous prime is 9247937. The next prime is 9247969. The reversal of 9247939 is 9397429.

It is a weak prime.

It is an emirp because it is prime and its reverse (9397429) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9247939 - 2¹ = 9247937 is a prime.

Together with 9247937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9247895 and 9247904.

It is not a weakly prime, because it can be changed into another prime (9247933) 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, 4623969 + 4623970.

It is an arithmetic number, because the mean of its divisors is an integer number (4623970).

Almost surely, 2^9247939 is an apocalyptic number.

9247939 is a deficient number, since it is larger than the sum of its proper divisors (1).

9247939 is an equidigital number, since it uses as much as digits as its factorization.

9247939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 43.

The square root of 9247939 is about 3041.0424199606. The cubic root of 9247939 is about 209.9012309532.

The spelling of 9247939 in words is "nine million, two hundred forty-seven thousand, nine hundred thirty-nine".