199169 has 4 divisors (see below), whose sum is σ = 200640. Its totient is φ = 197700.

The previous prime is 199153. The next prime is 199181. The reversal of 199169 is 961991.

199169 is nontrivially palindromic in base 14.

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.

It is a cyclic number.

It is not a de Polignac number, because 199169 - 2⁴ = 199153 is a prime.

It is a super-2 number, since 2×199169² = 79336581122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 199169.

It is not an unprimeable number, because it can be changed into a prime (199109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509 + ... + 810.

It is an arithmetic number, because the mean of its divisors is an integer number (50160).

It is a Proth number, since it is equal to 389 ⋅ 2⁹ + 1 and 389 < 2⁹.

2¹⁹⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

199169 is a deficient number, since it is larger than the sum of its proper divisors (1471).

199169 is a wasteful number, since it uses less digits than its factorization.

199169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470.

The product of its digits is 4374, while the sum is 35.

The square root of 199169 is about 446.2835421568. The cubic root of 199169 is about 58.3992470348.

The spelling of 199169 in words is "one hundred ninety-nine thousand, one hundred sixty-nine".