199998233 has 4 divisors (see below), whose sum is σ = 200182308. Its totient is φ = 199814160.

The previous prime is 199998221. The next prime is 199998241. The reversal of 199998233 is 332899991.

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 110733529 + 89264704 = 10523^2 + 9448^2 .

It is a cyclic number.

It is not a de Polignac number, because 199998233 - 2⁸ = 199997977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199998433) 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, 90398 + ... + 92583.

It is an arithmetic number, because the mean of its divisors is an integer number (50045577).

Almost surely, 2^199998233 is an apocalyptic number.

It is an amenable number.

199998233 is a deficient number, since it is larger than the sum of its proper divisors (184075).

199998233 is a wasteful number, since it uses less digits than its factorization.

199998233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184074.

The product of its digits is 944784, while the sum is 53.

The square root of 199998233 is about 14142.0731507088. The cubic root of 199998233 is about 584.8018253911.

The spelling of 199998233 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, two hundred thirty-three".