238828817 has 2 divisors, whose sum is σ = 238828818. Its totient is φ = 238828816.

The previous prime is 238828787. The next prime is 238828819. The reversal of 238828817 is 718828832.

238828817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222636241 + 16192576 = 14921^2 + 4024^2 .

It is a cyclic number.

It is not a de Polignac number, because 238828817 - 2⁸ = 238828561 is a prime.

Together with 238828819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238828819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119414408 + 119414409.

It is an arithmetic number, because the mean of its divisors is an integer number (119414409).

Almost surely, 2^238828817 is an apocalyptic number.

It is an amenable number.

238828817 is a deficient number, since it is larger than the sum of its proper divisors (1).

238828817 is an equidigital number, since it uses as much as digits as its factorization.

238828817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 47.

The square root of 238828817 is about 15454.0873881313. The cubic root of 238828817 is about 620.4339807554.

The spelling of 238828817 in words is "two hundred thirty-eight million, eight hundred twenty-eight thousand, eight hundred seventeen".