9986699 has 2 divisors, whose sum is σ = 9986700. Its totient is φ = 9986698.

The previous prime is 9986693. The next prime is 9986731. The reversal of 9986699 is 9966899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9986699 - 2⁸ = 9986443 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9986693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993349 + 4993350.

It is an arithmetic number, because the mean of its divisors is an integer number (4993350).

Almost surely, 2^9986699 is an apocalyptic number.

9986699 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986699 is an equidigital number, since it uses as much as digits as its factorization.

9986699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1889568, while the sum is 56.

The square root of 9986699 is about 3160.1738876207. The cubic root of 9986699 is about 215.3479061686.

The spelling of 9986699 in words is "nine million, nine hundred eighty-six thousand, six hundred ninety-nine".