4509443 has 4 divisors (see below), whose sum is σ = 4553328. Its totient is φ = 4465560.

The previous prime is 4509419. The next prime is 4509451. The reversal of 4509443 is 3449054.

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 4509443 - 2²⁰ = 3460867 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (4509493) 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, 21788 + ... + 21993.

It is an arithmetic number, because the mean of its divisors is an integer number (1138332).

Almost surely, 2^4509443 is an apocalyptic number.

4509443 is a deficient number, since it is larger than the sum of its proper divisors (43885).

4509443 is a wasteful number, since it uses less digits than its factorization.

4509443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43884.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 4509443 is about 2123.5449135820. The cubic root of 4509443 is about 165.2117636095.

The spelling of 4509443 in words is "four million, five hundred nine thousand, four hundred forty-three".