208996243 has 4 divisors (see below), whose sum is σ = 216203040. Its totient is φ = 201789448.

The previous prime is 208996217. The next prime is 208996247. The reversal of 208996243 is 342699802.

208996243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208996243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208996243.

It is not an unprimeable number, because it can be changed into a prime (208996247) 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, 3603355 + ... + 3603412.

It is an arithmetic number, because the mean of its divisors is an integer number (54050760).

Almost surely, 2^208996243 is an apocalyptic number.

208996243 is a deficient number, since it is larger than the sum of its proper divisors (7206797).

208996243 is an equidigital number, since it uses as much as digits as its factorization.

208996243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206796.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 208996243 is about 14456.7023556550. The cubic root of 208996243 is about 593.4436580678.

The spelling of 208996243 in words is "two hundred eight million, nine hundred ninety-six thousand, two hundred forty-three".