238639255 has 4 divisors (see below), whose sum is σ = 286367112. Its totient is φ = 190911400.

The previous prime is 238639243. The next prime is 238639273. The reversal of 238639255 is 552936832.

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

It is not a de Polignac number, because 238639255 - 2⁷ = 238639127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23863921 + ... + 23863930.

It is an arithmetic number, because the mean of its divisors is an integer number (71591778).

Almost surely, 2^238639255 is an apocalyptic number.

238639255 is a deficient number, since it is larger than the sum of its proper divisors (47727857).

238639255 is an equidigital number, since it uses as much as digits as its factorization.

238639255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47727856.

The product of its digits is 388800, while the sum is 43.

The square root of 238639255 is about 15447.9531006538. The cubic root of 238639255 is about 620.2697880672.

The spelling of 238639255 in words is "two hundred thirty-eight million, six hundred thirty-nine thousand, two hundred fifty-five".