499989858 has 16 divisors (see below), whose sum is σ = 1000536096. Its totient is φ = 166570560.

The previous prime is 499989829. The next prime is 499989859. The reversal of 499989858 is 858989994.

It is a junction number, because it is equal to n+sod(n) for n = 499989792 and 499989801.

It is not an unprimeable number, because it can be changed into a prime (499989859) 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 7 ways as a sum of consecutive naturals, for example, 11008 + ... + 33483.

It is an arithmetic number, because the mean of its divisors is an integer number (62533506).

Almost surely, 2^499989858 is an apocalyptic number.

499989858 is an abundant number, since it is smaller than the sum of its proper divisors (500546238).

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

499989858 is a wasteful number, since it uses less digits than its factorization.

499989858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46369.

The product of its digits is 67184640, while the sum is 69.

The square root of 499989858 is about 22360.4529918336. The cubic root of 499989858 is about 793.6951594740.

The spelling of 499989858 in words is "four hundred ninety-nine million, nine hundred eighty-nine thousand, eight hundred fifty-eight".