1166443 has 4 divisors (see below), whose sum is σ = 1168648. Its totient is φ = 1164240.

The previous prime is 1166441. The next prime is 1166453. The reversal of 1166443 is 3446611.

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 1166443 - 2¹ = 1166441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223 + ... + 1543.

It is an arithmetic number, because the mean of its divisors is an integer number (292162).

2^1166443 is an apocalyptic number.

1166443 is a deficient number, since it is larger than the sum of its proper divisors (2205).

1166443 is an equidigital number, since it uses as much as digits as its factorization.

1166443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204.

The product of its digits is 1728, while the sum is 25.

The square root of 1166443 is about 1080.0199072239. The cubic root of 1166443 is about 105.2659321067.

The spelling of 1166443 in words is "one million, one hundred sixty-six thousand, four hundred forty-three".