1989383 has 8 divisors (see below), whose sum is σ = 2182656. Its totient is φ = 1798200.

The previous prime is 1989353. The next prime is 1989401. The reversal of 1989383 is 3839891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1989383 - 2¹² = 1985287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1989383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2048 + ... + 2858.

It is an arithmetic number, because the mean of its divisors is an integer number (272832).

2^1989383 is an apocalyptic number.

1989383 is a deficient number, since it is larger than the sum of its proper divisors (193273).

1989383 is a wasteful number, since it uses less digits than its factorization.

1989383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

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

The square root of 1989383 is about 1410.4548911610. The cubic root of 1989383 is about 125.7687662944.

The spelling of 1989383 in words is "one million, nine hundred eighty-nine thousand, three hundred eighty-three".