238903 has 4 divisors (see below), whose sum is σ = 273040. Its totient is φ = 204768.

The previous prime is 238897. The next prime is 238919. The reversal of 238903 is 309832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238903 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 3⁷ + 9⁵ + 8 + 0 + 3¹¹ .

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

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17058 + ... + 17071.

It is an arithmetic number, because the mean of its divisors is an integer number (68260).

2²³⁸⁹⁰³ is an apocalyptic number.

238903 is a deficient number, since it is larger than the sum of its proper divisors (34137).

238903 is an equidigital number, since it uses as much as digits as its factorization.

238903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34136.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 238903 is about 488.7770452875. Note that the first 3 decimals coincide. The cubic root of 238903 is about 62.0498212102.

The spelling of 238903 in words is "two hundred thirty-eight thousand, nine hundred three".