239841201617 has 2 divisors, whose sum is σ = 239841201618. Its totient is φ = 239841201616.

The previous prime is 239841201581. The next prime is 239841201683. The reversal of 239841201617 is 716102148932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164778353041 + 75062848576 = 405929^2 + 273976^2 .

It is a cyclic number.

It is not a de Polignac number, because 239841201617 - 2²⁰ = 239840153041 is a prime.

It is a super-3 number, since 3×239841201617³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (239841201217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119920600808 + 119920600809.

It is an arithmetic number, because the mean of its divisors is an integer number (119920600809).

Almost surely, 2^239841201617 is an apocalyptic number.

It is an amenable number.

239841201617 is a deficient number, since it is larger than the sum of its proper divisors (1).

239841201617 is an equidigital number, since it uses as much as digits as its factorization.

239841201617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 239841201617 in words is "two hundred thirty-nine billion, eight hundred forty-one million, two hundred one thousand, six hundred seventeen".