1989343 has 4 divisors (see below), whose sum is σ = 1993320. Its totient is φ = 1985368.

The previous prime is 1989341. The next prime is 1989353. The reversal of 1989343 is 3439891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1989343 - 2¹ = 1989341 is a prime.

It is a Duffinian number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1108 + ... + 2281.

It is an arithmetic number, because the mean of its divisors is an integer number (498330).

2^1989343 is an apocalyptic number.

1989343 is a deficient number, since it is larger than the sum of its proper divisors (3977).

1989343 is an equidigital number, since it uses as much as digits as its factorization.

1989343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976.

The product of its digits is 23328, while the sum is 37.

The square root of 1989343 is about 1410.4407112672. The cubic root of 1989343 is about 125.7679233556.

It can be divided in two parts, 1989 and 343, that added together give a palindrome (2332).

The spelling of 1989343 in words is "one million, nine hundred eighty-nine thousand, three hundred forty-three".