9656939 has 2 divisors, whose sum is σ = 9656940. Its totient is φ = 9656938.

The previous prime is 9656917. The next prime is 9656947. The reversal of 9656939 is 9396569.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9656939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9656893 and 9656902.

It is not a weakly prime, because it can be changed into another prime (9656909) 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, 4828469 + 4828470.

It is an arithmetic number, because the mean of its divisors is an integer number (4828470).

Almost surely, 2^9656939 is an apocalyptic number.

9656939 is a deficient number, since it is larger than the sum of its proper divisors (1).

9656939 is an equidigital number, since it uses as much as digits as its factorization.

9656939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 393660, while the sum is 47.

The square root of 9656939 is about 3107.5615842651. The cubic root of 9656939 is about 212.9510713655.

The spelling of 9656939 in words is "nine million, six hundred fifty-six thousand, nine hundred thirty-nine".