238671047 has 2 divisors, whose sum is σ = 238671048. Its totient is φ = 238671046.

The previous prime is 238671011. The next prime is 238671049. The reversal of 238671047 is 740176832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 238671047 - 2⁶ = 238670983 is a prime.

Together with 238671049, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238671047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238671049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119335523 + 119335524.

It is an arithmetic number, because the mean of its divisors is an integer number (119335524).

Almost surely, 2^238671047 is an apocalyptic number.

238671047 is a deficient number, since it is larger than the sum of its proper divisors (1).

238671047 is an equidigital number, since it uses as much as digits as its factorization.

238671047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 238671047 is about 15448.9820700265. The cubic root of 238671047 is about 620.2973313724.

The spelling of 238671047 in words is "two hundred thirty-eight million, six hundred seventy-one thousand, forty-seven".