208209113 has 8 divisors (see below), whose sum is σ = 245629440. Its totient is φ = 172707840.

The previous prime is 208209109. The next prime is 208209121. The reversal of 208209113 is 311902802.

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 208209113 - 2² = 208209109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (208209143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479528 + ... + 479961.

It is an arithmetic number, because the mean of its divisors is an integer number (30703680).

Almost surely, 2^208209113 is an apocalyptic number.

It is an amenable number.

208209113 is a deficient number, since it is larger than the sum of its proper divisors (37420327).

208209113 is an equidigital number, since it uses as much as digits as its factorization.

208209113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959527.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 208209113 is about 14429.4529695342. The cubic root of 208209113 is about 592.6977037303.

The spelling of 208209113 in words is "two hundred eight million, two hundred nine thousand, one hundred thirteen".