238923 has 8 divisors (see below), whose sum is σ = 354000. Its totient is φ = 159264.

The previous prime is 238921. The next prime is 238939. The reversal of 238923 is 329832.

It is not a de Polignac number, because 238923 - 2¹ = 238921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8849 = 238923 / (2 + 3 + 8 + 9 + 2 + 3).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (238921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4398 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (44250).

2²³⁸⁹²³ is an apocalyptic number.

238923 is a deficient number, since it is larger than the sum of its proper divisors (115077).

238923 is an equidigital number, since it uses as much as digits as its factorization.

238923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8858 (or 8852 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 238923 is about 488.7975040853. The cubic root of 238923 is about 62.0515526825.

Subtracting 238923 from its reverse (329832), we obtain a palindrome (90909).

The spelling of 238923 in words is "two hundred thirty-eight thousand, nine hundred twenty-three".