209699230 has 32 divisors (see below), whose sum is σ = 410544288. Its totient is φ = 76656000.

The previous prime is 209699227. The next prime is 209699263. The reversal of 209699230 is 32996902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145 + ... + 21115.

It is an arithmetic number, because the mean of its divisors is an integer number (12829509).

Almost surely, 2^209699230 is an apocalyptic number.

209699230 is a deficient number, since it is larger than the sum of its proper divisors (200845058).

209699230 is a wasteful number, since it uses less digits than its factorization.

209699230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 209699230 is about 14480.9954768310. The cubic root of 209699230 is about 594.1082893110.

The spelling of 209699230 in words is "two hundred nine million, six hundred ninety-nine thousand, two hundred thirty".