208035139 has 8 divisors (see below), whose sum is σ = 225045632. Its totient is φ = 191168640.

The previous prime is 208035133. The next prime is 208035143. The reversal of 208035139 is 931530802.

It is a happy number.

208035139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 208035139 - 2³ = 208035131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 208035139.

It is not an unprimeable number, because it can be changed into a prime (208035131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32982 + ... + 38779.

It is an arithmetic number, because the mean of its divisors is an integer number (28130704).

Almost surely, 2^208035139 is an apocalyptic number.

208035139 is a deficient number, since it is larger than the sum of its proper divisors (17010493).

208035139 is a wasteful number, since it uses less digits than its factorization.

208035139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71997.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 208035139 is about 14423.4232760465. The cubic root of 208035139 is about 592.5325769147.

The spelling of 208035139 in words is "two hundred eight million, thirty-five thousand, one hundred thirty-nine".