208830939 has 4 divisors (see below), whose sum is σ = 278441256. Its totient is φ = 139220624.

The previous prime is 208830931. The next prime is 208830949. The reversal of 208830939 is 939038802.

208830939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 208830939 - 2³ = 208830931 is a prime.

It is a super-2 number, since 2×208830939² = 87220722167243442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 208830939.

It is not an unprimeable number, because it can be changed into a prime (208830931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34805154 + ... + 34805159.

It is an arithmetic number, because the mean of its divisors is an integer number (69610314).

Almost surely, 2^208830939 is an apocalyptic number.

208830939 is a deficient number, since it is larger than the sum of its proper divisors (69610317).

208830939 is an equidigital number, since it uses as much as digits as its factorization.

208830939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69610316.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 208830939 is about 14450.9840149382. The cubic root of 208830939 is about 593.2871568729.

The spelling of 208830939 in words is "two hundred eight million, eight hundred thirty thousand, nine hundred thirty-nine".