384543 has 6 divisors (see below), whose sum is σ = 555464. Its totient is φ = 256356.

The previous prime is 384533. The next prime is 384547. The reversal of 384543 is 345483.

It is a happy number.

It is not a de Polignac number, because 384543 - 2⁶ = 384479 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 (384547) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 21355 + ... + 21372.

2³⁸⁴⁵⁴³ is an apocalyptic number.

384543 is a deficient number, since it is larger than the sum of its proper divisors (170921).

384543 is a wasteful number, since it uses less digits than its factorization.

384543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42733 (or 42730 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 384543 is about 620.1153118574. The cubic root of 384543 is about 72.7190678717.

Subtracting from 384543 its reverse (345483), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 384543 in words is "three hundred eighty-four thousand, five hundred forty-three".