200439 has 6 divisors (see below), whose sum is σ = 289536. Its totient is φ = 133620.

The previous prime is 200437. The next prime is 200443. The reversal of 200439 is 934002.

It is not a de Polignac number, because 200439 - 2¹ = 200437 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11127 + ... + 11144.

It is an arithmetic number, because the mean of its divisors is an integer number (48256).

2²⁰⁰⁴³⁹ is an apocalyptic number.

200439 is a deficient number, since it is larger than the sum of its proper divisors (89097).

200439 is a wasteful number, since it uses less digits than its factorization.

200439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22277 (or 22274 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 200439 is about 447.7041433804. The cubic root of 200439 is about 58.5231116220.

The spelling of 200439 in words is "two hundred thousand, four hundred thirty-nine".