43443 has 8 divisors (see below), whose sum is σ = 64400. Its totient is φ = 28944.

The previous prime is 43441. The next prime is 43451. The reversal of 43443 is 34434.

It is not a de Polignac number, because 43443 - 2¹ = 43441 is a prime.

It is a Duffinian number.

43443 is a lucky number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (43441) 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, 778 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (8050).

2⁴³⁴⁴³ is an apocalyptic number.

43443 is a deficient number, since it is larger than the sum of its proper divisors (20957).

43443 is a wasteful number, since it uses less digits than its factorization.

43443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1612 counting only the distinct ones).

The product of its digits is 576, while the sum is 18.

The square root of 43443 is about 208.4298443122. The cubic root of 43443 is about 35.1538802847.

Adding to 43443 its reverse (34434), we get a palindrome (77877).

Subtracting from 43443 its reverse (34434), we obtain a palindrome (9009).

The spelling of 43443 in words is "forty-three thousand, four hundred forty-three", and thus it is an iban number.