1989344 has 48 divisors (see below), whose sum is σ = 4572288. Its totient is φ = 834432.

The previous prime is 1989341. The next prime is 1989353. The reversal of 1989344 is 4439891.

1989344 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1989298 and 1989307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18539 + ... + 18645.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^1989344 is an apocalyptic number.

1989344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286144).

1989344 is an abundant number, since it is smaller than the sum of its proper divisors (2582944).

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

1989344 is a wasteful number, since it uses less digits than its factorization.

1989344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 199 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 1989344 is about 1410.4410657663. The cubic root of 1989344 is about 125.7679444292.

The spelling of 1989344 in words is "one million, nine hundred eighty-nine thousand, three hundred forty-four".