208994388 has 12 divisors (see below), whose sum is σ = 487653600. Its totient is φ = 69664792.

The previous prime is 208994371. The next prime is 208994407. The reversal of 208994388 is 883499802.

It is a happy number.

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 208994388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8708088 + ... + 8708111.

It is an arithmetic number, because the mean of its divisors is an integer number (40637800).

Almost surely, 2^208994388 is an apocalyptic number.

It is an amenable number.

208994388 is an abundant number, since it is smaller than the sum of its proper divisors (278659212).

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

208994388 is a wasteful number, since it uses less digits than its factorization.

208994388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17416206 (or 17416204 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 208994388 is about 14456.6381984194. The cubic root of 208994388 is about 593.4419023086.

The spelling of 208994388 in words is "two hundred eight million, nine hundred ninety-four thousand, three hundred eighty-eight".