208939308 has 12 divisors (see below), whose sum is σ = 487525080. Its totient is φ = 69646432.

The previous prime is 208939271. The next prime is 208939309. The reversal of 208939308 is 803939802.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 208939308.

It is not an unprimeable number, because it can be changed into a prime (208939309) 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, 8705793 + ... + 8705816.

It is an arithmetic number, because the mean of its divisors is an integer number (40627090).

Almost surely, 2^208939308 is an apocalyptic number.

It is an amenable number.

208939308 is an abundant number, since it is smaller than the sum of its proper divisors (278585772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208939308 is a wasteful number, since it uses less digits than its factorization.

208939308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17411616 (or 17411614 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 208939308 is about 14454.7330656778. The cubic root of 208939308 is about 593.3897643027.

The spelling of 208939308 in words is "two hundred eight million, nine hundred thirty-nine thousand, three hundred eight".