9889646 has 16 divisors (see below), whose sum is σ = 16317504. Its totient is φ = 4466784.

The previous prime is 9889637. The next prime is 9889673. The reversal of 9889646 is 6469889.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9889594 and 9889603.

It is a congruent number.

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, 2825 + ... + 5268.

It is an arithmetic number, because the mean of its divisors is an integer number (1019844).

Almost surely, 2^9889646 is an apocalyptic number.

9889646 is a deficient number, since it is larger than the sum of its proper divisors (6427858).

9889646 is a wasteful number, since it uses less digits than its factorization.

9889646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155.

The product of its digits is 746496, while the sum is 50.

The square root of 9889646 is about 3144.7807554741. The cubic root of 9889646 is about 214.6480341882.

The spelling of 9889646 in words is "nine million, eight hundred eighty-nine thousand, six hundred forty-six".