9986669 has 16 divisors (see below), whose sum is σ = 12994560. Its totient is φ = 7442160.

The previous prime is 9986659. The next prime is 9986693. The reversal of 9986669 is 9666899.

It is not a de Polignac number, because 9986669 - 2⁴ = 9986653 is a prime.

It is a super-2 number, since 2×9986669² = 199467115431122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9986669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049 + ... + 4590.

It is an arithmetic number, because the mean of its divisors is an integer number (812160).

Almost surely, 2^9986669 is an apocalyptic number.

It is an amenable number.

9986669 is a deficient number, since it is larger than the sum of its proper divisors (3007891).

9986669 is a wasteful number, since it uses less digits than its factorization.

9986669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680.

The product of its digits is 1259712, while the sum is 53.

The square root of 9986669 is about 3160.1691410429. The cubic root of 9986669 is about 215.3476905336.

It can be divided in two parts, 998 and 6669, that added together give a palindrome (7667).

The spelling of 9986669 in words is "nine million, nine hundred eighty-six thousand, six hundred sixty-nine".