201839 has 8 divisors (see below), whose sum is σ = 224640. Its totient is φ = 179800.

The previous prime is 201833. The next prime is 201847. The reversal of 201839 is 938102.

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

It is a cyclic number.

It is not a de Polignac number, because 201839 - 2⁴ = 201823 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 (201833) 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, 494 + ... + 804.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2²⁰¹⁸³⁹ is an apocalyptic number.

201839 is a deficient number, since it is larger than the sum of its proper divisors (22801).

201839 is a wasteful number, since it uses less digits than its factorization.

201839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 201839 is about 449.2649552324. The cubic root of 201839 is about 58.6590504633.

The spelling of 201839 in words is "two hundred one thousand, eight hundred thirty-nine".