416818217 has 4 divisors (see below), whose sum is σ = 416889300. Its totient is φ = 416747136.

The previous prime is 416818211. The next prime is 416818229. The reversal of 416818217 is 712818614.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335475856 + 81342361 = 18316^2 + 9019^2 .

It is a cyclic number.

It is not a de Polignac number, because 416818217 - 2¹⁸ = 416556073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416818211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25868 + ... + 38765.

It is an arithmetic number, because the mean of its divisors is an integer number (104222325).

Almost surely, 2^416818217 is an apocalyptic number.

It is an amenable number.

416818217 is a deficient number, since it is larger than the sum of its proper divisors (71083).

416818217 is an equidigital number, since it uses as much as digits as its factorization.

416818217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71082.

The product of its digits is 21504, while the sum is 38.

The square root of 416818217 is about 20416.1263955727. The cubic root of 416818217 is about 746.9913345673.

The spelling of 416818217 in words is "four hundred sixteen million, eight hundred eighteen thousand, two hundred seventeen".