239638 has 8 divisors (see below), whose sum is σ = 410832. Its totient is φ = 102696.

The previous prime is 239633. The next prime is 239641. The reversal of 239638 is 836932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8545 + ... + 8572.

It is an arithmetic number, because the mean of its divisors is an integer number (51354).

2²³⁹⁶³⁸ is an apocalyptic number.

239638 is a deficient number, since it is larger than the sum of its proper divisors (171194).

239638 is a wasteful number, since it uses less digits than its factorization.

239638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17126.

The product of its digits is 7776, while the sum is 31.

The square root of 239638 is about 489.5283444296. The cubic root of 239638 is about 62.1133894475.

The spelling of 239638 in words is "two hundred thirty-nine thousand, six hundred thirty-eight".