1009984 has 28 divisors (see below), whose sum is σ = 2056384. Its totient is φ = 491904.

The previous prime is 1009963. The next prime is 1009991. The reversal of 1009984 is 4899001.

It is an Ulam number.

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, 2569 + ... + 2935.

2^1009984 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 1009984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028192).

1009984 is an abundant number, since it is smaller than the sum of its proper divisors (1046400).

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

1009984 is an equidigital number, since it uses as much as digits as its factorization.

1009984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1009984 is about 1004.9796017830. The cubic root of 1009984 is about 100.3316985443.

The spelling of 1009984 in words is "one million, nine thousand, nine hundred eighty-four".