417866489 has 2 divisors, whose sum is σ = 417866490. Its totient is φ = 417866488.

The previous prime is 417866479. The next prime is 417866503. The reversal of 417866489 is 984668714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349390864 + 68475625 = 18692^2 + 8275^2 .

It is a cyclic number.

It is not a de Polignac number, because 417866489 - 2⁸ = 417866233 is a prime.

It is a super-2 number, since 2×417866489² = 349224805258374242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 417866489.

It is not a weakly prime, because it can be changed into another prime (417866459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208933244 + 208933245.

It is an arithmetic number, because the mean of its divisors is an integer number (208933245).

Almost surely, 2^417866489 is an apocalyptic number.

It is an amenable number.

417866489 is a deficient number, since it is larger than the sum of its proper divisors (1).

417866489 is an equidigital number, since it uses as much as digits as its factorization.

417866489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 53.

The square root of 417866489 is about 20441.7829212620. The cubic root of 417866489 is about 747.6170226516.

The spelling of 417866489 in words is "four hundred seventeen million, eight hundred sixty-six thousand, four hundred eighty-nine".