9989448 has 64 divisors (see below), whose sum is σ = 28882560. Its totient is φ = 2820096.

The previous prime is 9989437. The next prime is 9989477. The reversal of 9989448 is 8449899.

It is a self number, because there is not a number n which added to its sum of digits gives 9989448.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15990 + ... + 16602.

It is an arithmetic number, because the mean of its divisors is an integer number (451290).

Almost surely, 2^9989448 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 9989448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14441280).

9989448 is an abundant number, since it is smaller than the sum of its proper divisors (18893112).

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

9989448 is a wasteful number, since it uses less digits than its factorization.

9989448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 722 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 9989448 is about 3160.6088021139. The cubic root of 9989448 is about 215.3676636842.

The spelling of 9989448 in words is "nine million, nine hundred eighty-nine thousand, four hundred forty-eight".