208937939 has 16 divisors (see below), whose sum is σ = 257126400. Its totient is φ = 165692544.

The previous prime is 208937933. The next prime is 208937947. The reversal of 208937939 is 939739802.

208937939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208937939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208937933) 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, 7859 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (16070400).

Almost surely, 2^208937939 is an apocalyptic number.

208937939 is a deficient number, since it is larger than the sum of its proper divisors (48188461).

208937939 is a wasteful number, since it uses less digits than its factorization.

208937939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29842.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 208937939 is about 14454.6857108690. The cubic root of 208937939 is about 593.3884683086.

The spelling of 208937939 in words is "two hundred eight million, nine hundred thirty-seven thousand, nine hundred thirty-nine".