11985443 has 4 divisors (see below), whose sum is σ = 11992368. Its totient is φ = 11978520.

The previous prime is 11985427. The next prime is 11985451. The reversal of 11985443 is 34458911.

11985443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3462²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11985443 - 2⁴ = 11985427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11985403) 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, 1730 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (2998092).

Almost surely, 2^11985443 is an apocalyptic number.

11985443 is a deficient number, since it is larger than the sum of its proper divisors (6925).

11985443 is an equidigital number, since it uses as much as digits as its factorization.

11985443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924.

The product of its digits is 17280, while the sum is 35.

The square root of 11985443 is about 3461.9998555748. Note that the first 3 decimals coincide. The cubic root of 11985443 is about 228.8502354668.

The spelling of 11985443 in words is "eleven million, nine hundred eighty-five thousand, four hundred forty-three".