208841 has 4 divisors (see below), whose sum is σ = 211092. Its totient is φ = 206592.

The previous prime is 208837. The next prime is 208843. The reversal of 208841 is 148802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 48841 + 160000 = 221^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 208841 - 2² = 208837 is a prime.

It is a super-2 number, since 2×208841² = 87229126562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (52773).

2²⁰⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

208841 is a deficient number, since it is larger than the sum of its proper divisors (2251).

208841 is an equidigital number, since it uses as much as digits as its factorization.

208841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 208841 is about 456.9912471809. The cubic root of 208841 is about 59.3296684462.

The spelling of 208841 in words is "two hundred eight thousand, eight hundred forty-one".