499989818 has 8 divisors (see below), whose sum is σ = 750147060. Its totient is φ = 249940800.

The previous prime is 499989803. The next prime is 499989827. The reversal of 499989818 is 818989994.

It can be written as a sum of positive squares in 2 ways, for example, as 266113969 + 233875849 = 16313^2 + 15293^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14303 + ... + 34706.

Almost surely, 2^499989818 is an apocalyptic number.

499989818 is a deficient number, since it is larger than the sum of its proper divisors (250157242).

499989818 is a wasteful number, since it uses less digits than its factorization.

499989818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54112.

The product of its digits is 13436928, while the sum is 65.

The square root of 499989818 is about 22360.4520973973. The cubic root of 499989818 is about 793.6951383084.

The spelling of 499989818 in words is "four hundred ninety-nine million, nine hundred eighty-nine thousand, eight hundred eighteen".