12173443 has 4 divisors (see below), whose sum is σ = 12181120. Its totient is φ = 12165768.

The previous prime is 12173419. The next prime is 12173453. The reversal of 12173443 is 34437121.

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 a de Polignac number, because none of the positive numbers 2^k-12173443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12173453) 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, 480 + ... + 4957.

It is an arithmetic number, because the mean of its divisors is an integer number (3045280).

Almost surely, 2^12173443 is an apocalyptic number.

12173443 is a deficient number, since it is larger than the sum of its proper divisors (7677).

12173443 is an equidigital number, since it uses as much as digits as its factorization.

12173443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676.

The product of its digits is 2016, while the sum is 25.

The square root of 12173443 is about 3489.0461447221. The cubic root of 12173443 is about 230.0405914496.

The spelling of 12173443 in words is "twelve million, one hundred seventy-three thousand, four hundred forty-three".