239005 has 8 divisors (see below), whose sum is σ = 308952. Its totient is φ = 176448.

The previous prime is 238991. The next prime is 239017. The reversal of 239005 is 500932.

It can be written as a sum of positive squares in 4 ways, for example, as 19044 + 219961 = 138^2 + 469^2 .

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 239005 - 2⁷ = 238877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774 + ... + 1903.

It is an arithmetic number, because the mean of its divisors is an integer number (38619).

2²³⁹⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

239005 is a deficient number, since it is larger than the sum of its proper divisors (69947).

239005 is a wasteful number, since it uses less digits than its factorization.

239005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 239005 is about 488.8813762049. The cubic root of 239005 is about 62.0586507090.

Adding to 239005 its reverse (500932), we get a palindrome (739937).

The spelling of 239005 in words is "two hundred thirty-nine thousand, five".