199469 has 4 divisors (see below), whose sum is σ = 200796. Its totient is φ = 198144.

The previous prime is 199457. The next prime is 199483. The reversal of 199469 is 964991.

199469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964991 = 19 ⋅50789.

It can be written as a sum of positive squares in 2 ways, for example, as 170569 + 28900 = 413^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 199469 - 2⁴ = 199453 is a prime.

It is a super-2 number, since 2×199469² = 79575763922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199429) 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, 404 + ... + 749.

It is an arithmetic number, because the mean of its divisors is an integer number (50199).

2¹⁹⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

199469 is a deficient number, since it is larger than the sum of its proper divisors (1327).

199469 is a wasteful number, since it uses less digits than its factorization.

199469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its digits is 17496, while the sum is 38.

The square root of 199469 is about 446.6195248755. The cubic root of 199469 is about 58.4285537793.

The spelling of 199469 in words is "one hundred ninety-nine thousand, four hundred sixty-nine".