9869939 has 2 divisors, whose sum is σ = 9869940. Its totient is φ = 9869938.

The previous prime is 9869929. The next prime is 9869957. The reversal of 9869939 is 9399689.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9869939 - 2²⁰ = 8821363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9869929) 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, 4934969 + 4934970.

It is an arithmetic number, because the mean of its divisors is an integer number (4934970).

Almost surely, 2^9869939 is an apocalyptic number.

9869939 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869939 is an equidigital number, since it uses as much as digits as its factorization.

9869939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 53.

The square root of 9869939 is about 3141.6459062090. The cubic root of 9869939 is about 214.5053637069.

The spelling of 9869939 in words is "nine million, eight hundred sixty-nine thousand, nine hundred thirty-nine".