338908217 has 2 divisors, whose sum is σ = 338908218. Its totient is φ = 338908216.

The previous prime is 338908189. The next prime is 338908247. The reversal of 338908217 is 712809833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230310976 + 108597241 = 15176^2 + 10421^2 .

It is a cyclic number.

It is not a de Polignac number, because 338908217 - 2¹⁰ = 338907193 is a prime.

It is a super-2 number, since 2×338908217² = 229717559100238178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338908247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169454108 + 169454109.

It is an arithmetic number, because the mean of its divisors is an integer number (169454109).

Almost surely, 2^338908217 is an apocalyptic number.

It is an amenable number.

338908217 is a deficient number, since it is larger than the sum of its proper divisors (1).

338908217 is an equidigital number, since it uses as much as digits as its factorization.

338908217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 338908217 is about 18409.4599866482. The cubic root of 338908217 is about 697.2053316101.

The spelling of 338908217 in words is "three hundred thirty-eight million, nine hundred eight thousand, two hundred seventeen".