206039 has 2 divisors, whose sum is σ = 206040. Its totient is φ = 206038.

The previous prime is 206033. The next prime is 206047. The reversal of 206039 is 930602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206039 - 2⁸ = 205783 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103019 + 103020.

It is an arithmetic number, because the mean of its divisors is an integer number (103020).

2²⁰⁶⁰³⁹ is an apocalyptic number.

206039 is a deficient number, since it is larger than the sum of its proper divisors (1).

206039 is an equidigital number, since it uses as much as digits as its factorization.

206039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 206039 is about 453.9151903164. The cubic root of 206039 is about 59.0631326510.

The spelling of 206039 in words is "two hundred six thousand, thirty-nine".