238240687 has 2 divisors, whose sum is σ = 238240688. Its totient is φ = 238240686.

The previous prime is 238240679. The next prime is 238240699. The reversal of 238240687 is 786042832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238240687 - 2³ = 238240679 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238240087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119120343 + 119120344.

It is an arithmetic number, because the mean of its divisors is an integer number (119120344).

Almost surely, 2^238240687 is an apocalyptic number.

238240687 is a deficient number, since it is larger than the sum of its proper divisors (1).

238240687 is an equidigital number, since it uses as much as digits as its factorization.

238240687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 238240687 is about 15435.0473598237. The cubic root of 238240687 is about 619.9242770857.

The spelling of 238240687 in words is "two hundred thirty-eight million, two hundred forty thousand, six hundred eighty-seven".