499989618 has 32 divisors (see below), whose sum is σ = 1176448320. Its totient is φ = 156859200.

The previous prime is 499989599. The next prime is 499989641. The reversal of 499989618 is 816989994.

499989618 is a `hidden beast` number, since 4 + 9 + 9 + 9 + 8 + 9 + 618 = 666.

It is a super-3 number, since 3×499989618³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 271408 + ... + 273243.

It is an arithmetic number, because the mean of its divisors is an integer number (36764010).

Almost surely, 2^499989618 is an apocalyptic number.

499989618 is an abundant number, since it is smaller than the sum of its proper divisors (676458702).

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

499989618 is a wasteful number, since it uses less digits than its factorization.

499989618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544679 (or 544673 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 499989618 is about 22360.4476252154. The cubic root of 499989618 is about 793.6950324802.

The spelling of 499989618 in words is "four hundred ninety-nine million, nine hundred eighty-nine thousand, six hundred eighteen".