197443 has 4 divisors (see below), whose sum is σ = 198360. Its totient is φ = 196528.

The previous prime is 197441. The next prime is 197453. The reversal of 197443 is 344791.

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 197443 - 2¹ = 197441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63 + ... + 631.

It is an arithmetic number, because the mean of its divisors is an integer number (49590).

2¹⁹⁷⁴⁴³ is an apocalyptic number.

197443 is a deficient number, since it is larger than the sum of its proper divisors (917).

197443 is an equidigital number, since it uses as much as digits as its factorization.

197443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its digits is 3024, while the sum is 28.

The square root of 197443 is about 444.3455862277. The cubic root of 197443 is about 58.2300612682.

The spelling of 197443 in words is "one hundred ninety-seven thousand, four hundred forty-three".