491114217 has 32 divisors (see below), whose sum is σ = 746444160. Its totient is φ = 284480000.

The previous prime is 491114213. The next prime is 491114219. The reversal of 491114217 is 712411194.

It is a cyclic number.

It is not a de Polignac number, because 491114217 - 2² = 491114213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491114213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94117 + ... + 99197.

It is an arithmetic number, because the mean of its divisors is an integer number (23326380).

Almost surely, 2^491114217 is an apocalyptic number.

It is an amenable number.

491114217 is a deficient number, since it is larger than the sum of its proper divisors (255329943).

491114217 is a wasteful number, since it uses less digits than its factorization.

491114217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its digits is 2016, while the sum is 30.

The square root of 491114217 is about 22161.0969268220. The cubic root of 491114217 is about 788.9706280099.

The spelling of 491114217 in words is "four hundred ninety-one million, one hundred fourteen thousand, two hundred seventeen".