543989 has 4 divisors (see below), whose sum is σ = 572640. Its totient is φ = 515340.

The previous prime is 543971. The next prime is 543997. The reversal of 543989 is 989345.

543989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 543989 - 2¹⁶ = 478453 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 (543929) 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, 14297 + ... + 14334.

It is an arithmetic number, because the mean of its divisors is an integer number (143160).

2⁵⁴³⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

543989 is a deficient number, since it is larger than the sum of its proper divisors (28651).

543989 is a wasteful number, since it uses less digits than its factorization.

543989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28650.

The product of its digits is 38880, while the sum is 38.

The square root of 543989 is about 737.5560995612. The cubic root of 543989 is about 81.6325518115.

The spelling of 543989 in words is "five hundred forty-three thousand, nine hundred eighty-nine".