238907 has 4 divisors (see below), whose sum is σ = 244776. Its totient is φ = 233040.

The previous prime is 238897. The next prime is 238919. The reversal of 238907 is 709832.

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

It is a cyclic number.

It is not a de Polignac number, because 238907 - 2¹⁰ = 237883 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238907.

It is not an unprimeable number, because it can be changed into a prime (238967) 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, 2873 + ... + 2954.

It is an arithmetic number, because the mean of its divisors is an integer number (61194).

2²³⁸⁹⁰⁷ is an apocalyptic number.

238907 is a deficient number, since it is larger than the sum of its proper divisors (5869).

238907 is an equidigital number, since it uses as much as digits as its factorization.

238907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 238907 is about 488.7811371156. The cubic root of 238907 is about 62.0501675124.

The spelling of 238907 in words is "two hundred thirty-eight thousand, nine hundred seven".