198433 has 4 divisors (see below), whose sum is σ = 201748. Its totient is φ = 195120.

The previous prime is 198427. The next prime is 198437. The reversal of 198433 is 334891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 88209 = 332^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 198433 - 2⁹ = 197921 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198437) 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, 1566 + ... + 1687.

It is an arithmetic number, because the mean of its divisors is an integer number (50437).

2¹⁹⁸⁴³³ is an apocalyptic number.

It is an amenable number.

198433 is a deficient number, since it is larger than the sum of its proper divisors (3315).

198433 is an equidigital number, since it uses as much as digits as its factorization.

198433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its digits is 2592, while the sum is 28.

The square root of 198433 is about 445.4581910797. The cubic root of 198433 is about 58.3272229427.

The spelling of 198433 in words is "one hundred ninety-eight thousand, four hundred thirty-three".