1989364 has 24 divisors (see below), whose sum is σ = 3811808. Its totient is φ = 902880.

The previous prime is 1989353. The next prime is 1989401. The reversal of 1989364 is 4639891.

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, 3199 + ... + 3769.

2^1989364 is an apocalyptic number.

It is an amenable number.

1989364 is a deficient number, since it is larger than the sum of its proper divisors (1822444).

1989364 is a wasteful number, since it uses less digits than its factorization.

1989364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 653 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 1989364 is about 1410.4481557292. The cubic root of 1989364 is about 125.7683658999.

The spelling of 1989364 in words is "one million, nine hundred eighty-nine thousand, three hundred sixty-four".