208000889 has 2 divisors, whose sum is σ = 208000890. Its totient is φ = 208000888.

The previous prime is 208000879. The next prime is 208000927. The reversal of 208000889 is 988000802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179560000 + 28440889 = 13400^2 + 5333^2 .

It is a cyclic number.

It is not a de Polignac number, because 208000889 - 2⁸ = 208000633 is a prime.

It is not a weakly prime, because it can be changed into another prime (208000879) 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 as a sum of consecutive naturals, namely, 104000444 + 104000445.

It is an arithmetic number, because the mean of its divisors is an integer number (104000445).

Almost surely, 2^208000889 is an apocalyptic number.

It is an amenable number.

208000889 is a deficient number, since it is larger than the sum of its proper divisors (1).

208000889 is an equidigital number, since it uses as much as digits as its factorization.

208000889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 208000889 is about 14422.2359223527. The cubic root of 208000889 is about 592.5000578017.

The spelling of 208000889 in words is "two hundred eight million, eight hundred eighty-nine", and thus it is an aban number.