208822009 has 8 divisors (see below), whose sum is σ = 228695328. Its totient is φ = 189096960.

The previous prime is 208822007. The next prime is 208822013. The reversal of 208822009 is 900228802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 208822009 - 2¹ = 208822007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208822001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 34107 + ... + 39760.

It is an arithmetic number, because the mean of its divisors is an integer number (28586916).

Almost surely, 2^208822009 is an apocalyptic number.

It is an amenable number.

208822009 is a deficient number, since it is larger than the sum of its proper divisors (19873319).

208822009 is a wasteful number, since it uses less digits than its factorization.

208822009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74135.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 208822009 is about 14450.6750361359. The cubic root of 208822009 is about 593.2787000644.

The spelling of 208822009 in words is "two hundred eight million, eight hundred twenty-two thousand, nine".