238395887 has 2 divisors, whose sum is σ = 238395888. Its totient is φ = 238395886.

The previous prime is 238395779. The next prime is 238395889. The reversal of 238395887 is 788593832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238395887 - 2¹⁴ = 238379503 is a prime.

Together with 238395889, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238395889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119197943 + 119197944.

It is an arithmetic number, because the mean of its divisors is an integer number (119197944).

Almost surely, 2^238395887 is an apocalyptic number.

238395887 is a deficient number, since it is larger than the sum of its proper divisors (1).

238395887 is an equidigital number, since it uses as much as digits as its factorization.

238395887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The square root of 238395887 is about 15440.0740607032. The cubic root of 238395887 is about 620.0588627777.

The spelling of 238395887 in words is "two hundred thirty-eight million, three hundred ninety-five thousand, eight hundred eighty-seven".