238904863 has 2 divisors, whose sum is σ = 238904864. Its totient is φ = 238904862.

The previous prime is 238904839. The next prime is 238904899. The reversal of 238904863 is 368409832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238904863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238904363) 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, 119452431 + 119452432.

It is an arithmetic number, because the mean of its divisors is an integer number (119452432).

Almost surely, 2^238904863 is an apocalyptic number.

238904863 is a deficient number, since it is larger than the sum of its proper divisors (1).

238904863 is an equidigital number, since it uses as much as digits as its factorization.

238904863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 238904863 is about 15456.5475769979. The cubic root of 238904863 is about 620.4998250092.

The spelling of 238904863 in words is "two hundred thirty-eight million, nine hundred four thousand, eight hundred sixty-three".