438945696617 has 2 divisors, whose sum is σ = 438945696618. Its totient is φ = 438945696616.

The previous prime is 438945696601. The next prime is 438945696671. The reversal of 438945696617 is 716696549834.

Together with next prime (438945696671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327797471296 + 111148225321 = 572536^2 + 333389^2 .

It is a cyclic number.

It is not a de Polignac number, because 438945696617 - 2⁴ = 438945696601 is a prime.

It is a super-3 number, since 3×438945696617³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (438945696517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219472848308 + 219472848309.

It is an arithmetic number, because the mean of its divisors is an integer number (219472848309).

Almost surely, 2^438945696617 is an apocalyptic number.

It is an amenable number.

438945696617 is a deficient number, since it is larger than the sum of its proper divisors (1).

438945696617 is an equidigital number, since it uses as much as digits as its factorization.

438945696617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 68.

The spelling of 438945696617 in words is "four hundred thirty-eight billion, nine hundred forty-five million, six hundred ninety-six thousand, six hundred seventeen".