238398047 has 2 divisors, whose sum is σ = 238398048. Its totient is φ = 238398046.

The previous prime is 238398007. The next prime is 238398113. The reversal of 238398047 is 740893832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238398047 - 2⁸ = 238397791 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 238397989 and 238398007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238398007) 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, 119199023 + 119199024.

It is an arithmetic number, because the mean of its divisors is an integer number (119199024).

Almost surely, 2^238398047 is an apocalyptic number.

238398047 is a deficient number, since it is larger than the sum of its proper divisors (1).

238398047 is an equidigital number, since it uses as much as digits as its factorization.

238398047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 238398047 is about 15440.1440083958. The cubic root of 238398047 is about 620.0607354653.

The spelling of 238398047 in words is "two hundred thirty-eight million, three hundred ninety-eight thousand, forty-seven".