417238139 has 2 divisors, whose sum is σ = 417238140. Its totient is φ = 417238138.

The previous prime is 417238127. The next prime is 417238243. The reversal of 417238139 is 931832714.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 417238139 - 2⁸ = 417237883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (417238639) 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, 208619069 + 208619070.

It is an arithmetic number, because the mean of its divisors is an integer number (208619070).

Almost surely, 2^417238139 is an apocalyptic number.

417238139 is a deficient number, since it is larger than the sum of its proper divisors (1).

417238139 is an equidigital number, since it uses as much as digits as its factorization.

417238139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 417238139 is about 20426.4078829343. The cubic root of 417238139 is about 747.2421016111.

The spelling of 417238139 in words is "four hundred seventeen million, two hundred thirty-eight thousand, one hundred thirty-nine".