238339447 has 2 divisors, whose sum is σ = 238339448. Its totient is φ = 238339446.

The previous prime is 238339441. The next prime is 238339469. The reversal of 238339447 is 744933832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238339447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238339441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119169723 + 119169724.

It is an arithmetic number, because the mean of its divisors is an integer number (119169724).

Almost surely, 2^238339447 is an apocalyptic number.

238339447 is a deficient number, since it is larger than the sum of its proper divisors (1).

238339447 is an equidigital number, since it uses as much as digits as its factorization.

238339447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 238339447 is about 15438.2462410729. The cubic root of 238339447 is about 620.0099261331.

The spelling of 238339447 in words is "two hundred thirty-eight million, three hundred thirty-nine thousand, four hundred forty-seven".