238856039 has 2 divisors, whose sum is σ = 238856040. Its totient is φ = 238856038.

The previous prime is 238856027. The next prime is 238856047. The reversal of 238856039 is 930658832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238856039 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 (238856339) 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, 119428019 + 119428020.

It is an arithmetic number, because the mean of its divisors is an integer number (119428020).

Almost surely, 2^238856039 is an apocalyptic number.

238856039 is a deficient number, since it is larger than the sum of its proper divisors (1).

238856039 is an equidigital number, since it uses as much as digits as its factorization.

238856039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 238856039 is about 15454.9681009053. The cubic root of 238856039 is about 620.4575524673.

The spelling of 238856039 in words is "two hundred thirty-eight million, eight hundred fifty-six thousand, thirty-nine".