199983169 has 4 divisors (see below), whose sum is σ = 200012800. Its totient is φ = 199953540.

The previous prime is 199983149. The next prime is 199983191. The reversal of 199983169 is 961389991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 199983169 - 2¹¹ = 199981121 is a prime.

It is a super-2 number, since 2×199983169² = 79986535766565122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199983109) 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, 784 + ... + 20014.

It is an arithmetic number, because the mean of its divisors is an integer number (50003200).

Almost surely, 2^199983169 is an apocalyptic number.

It is an amenable number.

199983169 is a deficient number, since it is larger than the sum of its proper divisors (29631).

199983169 is a wasteful number, since it uses less digits than its factorization.

199983169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29630.

The product of its digits is 944784, while the sum is 55.

The square root of 199983169 is about 14141.5405454993. The cubic root of 199983169 is about 584.7871424682.

The spelling of 199983169 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, one hundred sixty-nine".