239638089 has 16 divisors (see below), whose sum is σ = 338057280. Its totient is φ = 150575040.

The previous prime is 239638079. The next prime is 239638123. The reversal of 239638089 is 980836932.

It is not a de Polignac number, because 239638089 - 2⁸ = 239637833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (239638019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559 + ... + 21899.

It is an arithmetic number, because the mean of its divisors is an integer number (21128580).

Almost surely, 2^239638089 is an apocalyptic number.

It is an amenable number.

239638089 is a deficient number, since it is larger than the sum of its proper divisors (98419191).

239638089 is a wasteful number, since it uses less digits than its factorization.

239638089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 239638089 is about 15480.2483507210. The cubic root of 239638089 is about 621.1339713705.

The spelling of 239638089 in words is "two hundred thirty-nine million, six hundred thirty-eight thousand, eighty-nine".