9899963 has 2 divisors, whose sum is σ = 9899964. Its totient is φ = 9899962.

The previous prime is 9899951. The next prime is 9899977. The reversal of 9899963 is 3699989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9899963 - 2⁴ = 9899947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9899993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949981 + 4949982.

It is an arithmetic number, because the mean of its divisors is an integer number (4949982).

Almost surely, 2^9899963 is an apocalyptic number.

9899963 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899963 is an equidigital number, since it uses as much as digits as its factorization.

9899963 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 9899963 is about 3146.4206648190. The cubic root of 9899963 is about 214.7226494016.

The spelling of 9899963 in words is "nine million, eight hundred ninety-nine thousand, nine hundred sixty-three".