499999218 has 8 divisors (see below), whose sum is σ = 999998448. Its totient is φ = 166666404.

The previous prime is 499999211. The next prime is 499999219. The reversal of 499999218 is 812999994.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

499999218 is an admirable number.

It is a super-2 number, since 2×499999218² = 499998436001223048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (499999211) 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 3 ways as a sum of consecutive naturals, for example, 41666596 + ... + 41666607.

It is an arithmetic number, because the mean of its divisors is an integer number (124999806).

Almost surely, 2^499999218 is an apocalyptic number.

499999218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499999218 is a wasteful number, since it uses less digits than its factorization.

499999218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83333208.

The product of its digits is 3779136, while the sum is 60.

The square root of 499999218 is about 22360.6622889395. The cubic root of 499999218 is about 793.7001122013.

The spelling of 499999218 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, two hundred eighteen".