9840659 has 2 divisors, whose sum is σ = 9840660. Its totient is φ = 9840658.

The previous prime is 9840647. The next prime is 9840661. The reversal of 9840659 is 9560489.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9840659 - 2⁴ = 9840643 is a prime.

Together with 9840661, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (9846659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4920329 + 4920330.

It is an arithmetic number, because the mean of its divisors is an integer number (4920330).

Almost surely, 2^9840659 is an apocalyptic number.

9840659 is a deficient number, since it is larger than the sum of its proper divisors (1).

9840659 is an equidigital number, since it uses as much as digits as its factorization.

9840659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 9840659 is about 3136.9824672765. The cubic root of 9840659 is about 214.2930375698.

The spelling of 9840659 in words is "nine million, eight hundred forty thousand, six hundred fifty-nine".