208871473 has 4 divisors (see below), whose sum is σ = 209539108. Its totient is φ = 208203840.

The previous prime is 208871471. The next prime is 208871479. The reversal of 208871473 is 374178802.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8025889 + 200845584 = 2833^2 + 14172^2 .

It is a cyclic number.

It is not a de Polignac number, because 208871473 - 2¹ = 208871471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208871471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333348 + ... + 333973.

It is an arithmetic number, because the mean of its divisors is an integer number (52384777).

Almost surely, 2^208871473 is an apocalyptic number.

It is an amenable number.

208871473 is a deficient number, since it is larger than the sum of its proper divisors (667635).

208871473 is an equidigital number, since it uses as much as digits as its factorization.

208871473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667634.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 208871473 is about 14452.3864119390. The cubic root of 208871473 is about 593.3255399880.

The spelling of 208871473 in words is "two hundred eight million, eight hundred seventy-one thousand, four hundred seventy-three".