9989144 has 16 divisors (see below), whose sum is σ = 20432520. Its totient is φ = 4540480.

The previous prime is 9989123. The next prime is 9989159. The reversal of 9989144 is 4419899.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 9989095 and 9989104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56669 + ... + 56844.

Almost surely, 2^9989144 is an apocalyptic number.

It is an amenable number.

9989144 is an abundant number, since it is smaller than the sum of its proper divisors (10443376).

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

9989144 is a wasteful number, since it uses less digits than its factorization.

9989144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113530 (or 113526 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 9989144 is about 3160.5607097476. The cubic root of 9989144 is about 215.3654789644.

The spelling of 9989144 in words is "nine million, nine hundred eighty-nine thousand, one hundred forty-four".