238878329 has 2 divisors, whose sum is σ = 238878330. Its totient is φ = 238878328.

The previous prime is 238878313. The next prime is 238878331. The reversal of 238878329 is 923878832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174108025 + 64770304 = 13195^2 + 8048^2 .

It is a cyclic number.

It is not a de Polignac number, because 238878329 - 2⁴ = 238878313 is a prime.

It is a Sophie Germain prime.

Together with 238878331, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (238878389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119439164 + 119439165.

It is an arithmetic number, because the mean of its divisors is an integer number (119439165).

Almost surely, 2^238878329 is an apocalyptic number.

It is an amenable number.

238878329 is a deficient number, since it is larger than the sum of its proper divisors (1).

238878329 is an equidigital number, since it uses as much as digits as its factorization.

238878329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 238878329 is about 15455.6892114199. The cubic root of 238878329 is about 620.4768521938.

The spelling of 238878329 in words is "two hundred thirty-eight million, eight hundred seventy-eight thousand, three hundred twenty-nine".