199268909 has 16 divisors (see below), whose sum is σ = 230216448. Its totient is φ = 168953472.

The previous prime is 199268893. The next prime is 199268911. The reversal of 199268909 is 909862991.

199268909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 199268909 - 2⁴ = 199268893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199268929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435809 + ... + 436265.

It is an arithmetic number, because the mean of its divisors is an integer number (14388528).

Almost surely, 2^199268909 is an apocalyptic number.

It is an amenable number.

199268909 is a deficient number, since it is larger than the sum of its proper divisors (30947539).

199268909 is a wasteful number, since it uses less digits than its factorization.

199268909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004.

The product of its (nonzero) digits is 629856, while the sum is 53.

The square root of 199268909 is about 14116.2639887472. The cubic root of 199268909 is about 584.0901032631.

The spelling of 199268909 in words is "one hundred ninety-nine million, two hundred sixty-eight thousand, nine hundred nine".