208947385 has 16 divisors (see below), whose sum is σ = 253827072. Its totient is φ = 165110400.

The previous prime is 208947377. The next prime is 208947419. The reversal of 208947385 is 583749802.

It is not a de Polignac number, because 208947385 - 2³ = 208947377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177850 + ... + 179020.

It is an arithmetic number, because the mean of its divisors is an integer number (15864192).

Almost surely, 2^208947385 is an apocalyptic number.

It is an amenable number.

208947385 is a deficient number, since it is larger than the sum of its proper divisors (44879687).

208947385 is a wasteful number, since it uses less digits than its factorization.

208947385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 208947385 is about 14455.0124524332. The cubic root of 208947385 is about 593.3974104583.

The spelling of 208947385 in words is "two hundred eight million, nine hundred forty-seven thousand, three hundred eighty-five".