9989668 has 24 divisors (see below), whose sum is σ = 19819520. Its totient is φ = 4367520.

The previous prime is 9989587. The next prime is 9989671. The reversal of 9989668 is 8669899.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4068 + ... + 6043.

Almost surely, 2^9989668 is an apocalyptic number.

It is an amenable number.

9989668 is a deficient number, since it is larger than the sum of its proper divisors (9829852).

9989668 is a wasteful number, since it uses less digits than its factorization.

9989668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10145 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 55.

The square root of 9989668 is about 3160.6436053437. The cubic root of 9989668 is about 215.3692447037.

The spelling of 9989668 in words is "nine million, nine hundred eighty-nine thousand, six hundred sixty-eight".