209030392 has 16 divisors (see below), whose sum is σ = 398575800. Its totient is φ = 102743520.

The previous prime is 209030383. The next prime is 209030399. The reversal of 209030392 is 293030902.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 209030392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209030399) 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, 220959 + ... + 221902.

Almost surely, 2^209030392 is an apocalyptic number.

It is an amenable number.

209030392 is a deficient number, since it is larger than the sum of its proper divisors (189545408).

209030392 is a wasteful number, since it uses less digits than its factorization.

209030392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442926 (or 442922 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 209030392 is about 14457.8833858902. The cubic root of 209030392 is about 593.4759782721.

The spelling of 209030392 in words is "two hundred nine million, thirty thousand, three hundred ninety-two".