238914397 has 2 divisors, whose sum is σ = 238914398. Its totient is φ = 238914396.

The previous prime is 238914391. The next prime is 238914433. The reversal of 238914397 is 793419832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223382916 + 15531481 = 14946^2 + 3941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238914397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238914391) 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, 119457198 + 119457199.

It is an arithmetic number, because the mean of its divisors is an integer number (119457199).

Almost surely, 2^238914397 is an apocalyptic number.

It is an amenable number.

238914397 is a deficient number, since it is larger than the sum of its proper divisors (1).

238914397 is an equidigital number, since it uses as much as digits as its factorization.

238914397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 238914397 is about 15456.8559869076. The cubic root of 238914397 is about 620.5080790153.

The spelling of 238914397 in words is "two hundred thirty-eight million, nine hundred fourteen thousand, three hundred ninety-seven".