209000239 has 6 divisors (see below), whose sum is σ = 243122784. Its totient is φ = 179143020.

The previous prime is 209000219. The next prime is 209000249. The reversal of 209000239 is 932000902.

It is a de Polignac number, because none of the positive numbers 2^k-209000239 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 (209000219) 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, 2132607 + ... + 2132704.

It is an arithmetic number, because the mean of its divisors is an integer number (40520464).

Almost surely, 2^209000239 is an apocalyptic number.

209000239 is a deficient number, since it is larger than the sum of its proper divisors (34122545).

209000239 is an equidigital number, since it uses as much as digits as its factorization.

209000239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265325 (or 4265318 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 209000239 is about 14456.8405607864. The cubic root of 209000239 is about 593.4474402502.

The spelling of 209000239 in words is "two hundred nine million, two hundred thirty-nine", and thus it is an aban number.