2005443 has 24 divisors (see below), whose sum is σ = 3234816. Its totient is φ = 1186800.

The previous prime is 2005441. The next prime is 2005447. The reversal of 2005443 is 3445002.

It is a happy number.

It is not a de Polignac number, because 2005443 - 2¹ = 2005441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2005441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4438 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (134784).

2^2005443 is an apocalyptic number.

2005443 is a deficient number, since it is larger than the sum of its proper divisors (1229373).

2005443 is a wasteful number, since it uses less digits than its factorization.

2005443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2005443 is about 1416.1366459491. The cubic root of 2005443 is about 126.1062972985.

The spelling of 2005443 in words is "two million, five thousand, four hundred forty-three".