1989338 has 16 divisors (see below), whose sum is σ = 3383520. Its totient is φ = 869616.

The previous prime is 1989329. The next prime is 1989341. The reversal of 1989338 is 8339891.

It is a junction number, because it is equal to n+sod(n) for n = 1989295 and 1989304.

It is a congruent number.

It is an unprimeable number.

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, 1520 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (211470).

2^1989338 is an apocalyptic number.

1989338 is a deficient number, since it is larger than the sum of its proper divisors (1394182).

1989338 is a wasteful number, since it uses less digits than its factorization.

1989338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061.

The product of its digits is 46656, while the sum is 41.

The square root of 1989338 is about 1410.4389387705. The cubic root of 1989338 is about 125.7678179875.

The spelling of 1989338 in words is "one million, nine hundred eighty-nine thousand, three hundred thirty-eight".