208385461 has 2 divisors, whose sum is σ = 208385462. Its totient is φ = 208385460.

The previous prime is 208385449. The next prime is 208385479. The reversal of 208385461 is 164583802.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187964100 + 20421361 = 13710^2 + 4519^2 .

It is a cyclic number.

It is not a de Polignac number, because 208385461 - 2⁹ = 208384949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 208385461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208385491) 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, 104192730 + 104192731.

It is an arithmetic number, because the mean of its divisors is an integer number (104192731).

Almost surely, 2^208385461 is an apocalyptic number.

It is an amenable number.

208385461 is a deficient number, since it is larger than the sum of its proper divisors (1).

208385461 is an equidigital number, since it uses as much as digits as its factorization.

208385461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 208385461 is about 14435.5623721419. The cubic root of 208385461 is about 592.8649899714.

The spelling of 208385461 in words is "two hundred eight million, three hundred eighty-five thousand, four hundred sixty-one".