9889744 has 40 divisors (see below), whose sum is σ = 20062208. Its totient is φ = 4717440.

The previous prime is 9889741. The next prime is 9889753. The reversal of 9889744 is 4479889.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9889741) 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 in 7 ways as a sum of consecutive naturals, for example, 62914 + ... + 63070.

Almost surely, 2^9889744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9889744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10031104).

9889744 is an abundant number, since it is smaller than the sum of its proper divisors (10172464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9889744 is a wasteful number, since it uses less digits than its factorization.

9889744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 317 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 9889744 is about 3144.7963368078. The cubic root of 9889744 is about 214.6487431936.

The spelling of 9889744 in words is "nine million, eight hundred eighty-nine thousand, seven hundred forty-four".