208589413 has 2 divisors, whose sum is σ = 208589414. Its totient is φ = 208589412.

The previous prime is 208589393. The next prime is 208589419. The reversal of 208589413 is 314985802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133125444 + 75463969 = 11538^2 + 8687^2 .

It is a cyclic number.

It is not a de Polignac number, because 208589413 - 2²¹ = 206492261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208589419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104294706 + 104294707.

It is an arithmetic number, because the mean of its divisors is an integer number (104294707).

Almost surely, 2^208589413 is an apocalyptic number.

It is an amenable number.

208589413 is a deficient number, since it is larger than the sum of its proper divisors (1).

208589413 is an equidigital number, since it uses as much as digits as its factorization.

208589413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 208589413 is about 14442.6248653076. The cubic root of 208589413 is about 593.0583441102.

The spelling of 208589413 in words is "two hundred eight million, five hundred eighty-nine thousand, four hundred thirteen".