9899693 has 2 divisors, whose sum is σ = 9899694. Its totient is φ = 9899692.

The previous prime is 9899689. The next prime is 9899731. The reversal of 9899693 is 3969989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7628644 + 2271049 = 2762^2 + 1507^2 .

It is a cyclic number.

It is not a de Polignac number, because 9899693 - 2² = 9899689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9899663) 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, 4949846 + 4949847.

It is an arithmetic number, because the mean of its divisors is an integer number (4949847).

Almost surely, 2^9899693 is an apocalyptic number.

It is an amenable number.

9899693 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899693 is an equidigital number, since it uses as much as digits as its factorization.

9899693 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 9899693 is about 3146.3777586298. The cubic root of 9899693 is about 214.7206973525.

The spelling of 9899693 in words is "nine million, eight hundred ninety-nine thousand, six hundred ninety-three".