238914947 has 2 divisors, whose sum is σ = 238914948. Its totient is φ = 238914946.

The previous prime is 238914943. The next prime is 238914953. The reversal of 238914947 is 749419832.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 238914947 - 2² = 238914943 is a prime.

It is not a weakly prime, because it can be changed into another prime (238914941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119457473 + 119457474.

It is an arithmetic number, because the mean of its divisors is an integer number (119457474).

Almost surely, 2^238914947 is an apocalyptic number.

238914947 is a deficient number, since it is larger than the sum of its proper divisors (1).

238914947 is an equidigital number, since it uses as much as digits as its factorization.

238914947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 238914947 is about 15456.8737783551. The cubic root of 238914947 is about 620.5085551680.

The spelling of 238914947 in words is "two hundred thirty-eight million, nine hundred fourteen thousand, nine hundred forty-seven".