199352309 has 8 divisors (see below), whose sum is σ = 217711872. Its totient is φ = 181424880.

The previous prime is 199352299. The next prime is 199352311. The reversal of 199352309 is 903253991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199352309 - 2²⁰ = 198303733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199252309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107069 + ... + 108914.

It is an arithmetic number, because the mean of its divisors is an integer number (27213984).

Almost surely, 2^199352309 is an apocalyptic number.

It is an amenable number.

199352309 is a deficient number, since it is larger than the sum of its proper divisors (18359563).

199352309 is a wasteful number, since it uses less digits than its factorization.

199352309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216067.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 199352309 is about 14119.2177191231. The cubic root of 199352309 is about 584.1715782918.

The spelling of 199352309 in words is "one hundred ninety-nine million, three hundred fifty-two thousand, three hundred nine".