499989168 has 120 divisors (see below), whose sum is σ = 1610388000. Its totient is φ = 141852672.

The previous prime is 499989163. The next prime is 499989169. The reversal of 499989168 is 861989994.

499989168 is a `hidden beast` number, since 499 + 9 + 89 + 1 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (499989163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148528 + ... + 151856.

It is an arithmetic number, because the mean of its divisors is an integer number (13419900).

Almost surely, 2^499989168 is an apocalyptic number.

499989168 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499989168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805194000).

499989168 is an abundant number, since it is smaller than the sum of its proper divisors (1110398832).

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

499989168 is a wasteful number, since it uses less digits than its factorization.

499989168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499 (or 3490 counting only the distinct ones).

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

The square root of 499989168 is about 22360.4375628027. The cubic root of 499989168 is about 793.6947943666.

The spelling of 499989168 in words is "four hundred ninety-nine million, nine hundred eighty-nine thousand, one hundred sixty-eight".