489818217 has 16 divisors (see below), whose sum is σ = 749371392. Its totient is φ = 278778000.

The previous prime is 489818213. The next prime is 489818221. The reversal of 489818217 is 712818984.

It is an interprime number because it is at equal distance from previous prime (489818213) and next prime (489818221).

It is not a de Polignac number, because 489818217 - 2² = 489818213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489818213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41193 + ... + 51734.

It is an arithmetic number, because the mean of its divisors is an integer number (46835712).

Almost surely, 2^489818217 is an apocalyptic number.

It is an amenable number.

489818217 is a deficient number, since it is larger than the sum of its proper divisors (259553175).

489818217 is a wasteful number, since it uses less digits than its factorization.

489818217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93188.

The product of its digits is 258048, while the sum is 48.

The square root of 489818217 is about 22131.8371808578. The cubic root of 489818217 is about 788.2760124813.

The spelling of 489818217 in words is "four hundred eighty-nine million, eight hundred eighteen thousand, two hundred seventeen".