208845493 has 16 divisors (see below), whose sum is σ = 226658736. Its totient is φ = 191692800.

The previous prime is 208845467. The next prime is 208845509. The reversal of 208845493 is 394548802.

It can be written as a sum of positive squares in 8 ways, for example, as 12341169 + 196504324 = 3513^2 + 14018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208845493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208845463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173293 + ... + 174493.

It is an arithmetic number, because the mean of its divisors is an integer number (14166171).

Almost surely, 2^208845493 is an apocalyptic number.

It is an amenable number.

208845493 is a deficient number, since it is larger than the sum of its proper divisors (17813243).

208845493 is a wasteful number, since it uses less digits than its factorization.

208845493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 208845493 is about 14451.4875704891. The cubic root of 208845493 is about 593.3009391550.

The spelling of 208845493 in words is "two hundred eight million, eight hundred forty-five thousand, four hundred ninety-three".