238794217 has 2 divisors, whose sum is σ = 238794218. Its totient is φ = 238794216.

The previous prime is 238794187. The next prime is 238794233. The reversal of 238794217 is 712497832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125350416 + 113443801 = 11196^2 + 10651^2 .

It is a cyclic number.

It is not a de Polignac number, because 238794217 - 2²⁷ = 104576489 is a prime.

It is not a weakly prime, because it can be changed into another prime (238794617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119397108 + 119397109.

It is an arithmetic number, because the mean of its divisors is an integer number (119397109).

Almost surely, 2^238794217 is an apocalyptic number.

It is an amenable number.

238794217 is a deficient number, since it is larger than the sum of its proper divisors (1).

238794217 is an equidigital number, since it uses as much as digits as its factorization.

238794217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 238794217 is about 15452.9679026393. The cubic root of 238794217 is about 620.4040177988.

The spelling of 238794217 in words is "two hundred thirty-eight million, seven hundred ninety-four thousand, two hundred seventeen".