208878841 has 4 divisors (see below), whose sum is σ = 209344500. Its totient is φ = 208413184.

The previous prime is 208878829. The next prime is 208878853. The reversal of 208878841 is 148878802.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (208878829) and next prime (208878853).

It can be written as a sum of positive squares in 2 ways, for example, as 175006441 + 33872400 = 13229^2 + 5820^2 .

It is a cyclic number.

It is not a de Polignac number, because 208878841 - 2¹⁵ = 208846073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208878791 and 208878800.

It is not an unprimeable number, because it can be changed into a prime (208878871) 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 3 ways as a sum of consecutive naturals, for example, 232156 + ... + 233053.

It is an arithmetic number, because the mean of its divisors is an integer number (52336125).

Almost surely, 2^208878841 is an apocalyptic number.

It is an amenable number.

208878841 is a deficient number, since it is larger than the sum of its proper divisors (465659).

208878841 is an equidigital number, since it uses as much as digits as its factorization.

208878841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465658.

The product of its (nonzero) digits is 229376, while the sum is 46.

The square root of 208878841 is about 14452.6413156904. The cubic root of 208878841 is about 593.3325164811.

The spelling of 208878841 in words is "two hundred eight million, eight hundred seventy-eight thousand, eight hundred forty-one".