499968 has 108 divisors (see below), whose sum is σ = 1700608. Its totient is φ = 138240.

The previous prime is 499957. The next prime is 499969. The reversal of 499968 is 869994.

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

It is a zygodrome in base 5.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499968.

It is not an unprimeable number, because it can be changed into a prime (499969) by changing a digit.

499968 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16113 + ... + 16143.

2⁴⁹⁹⁹⁶⁸ is an apocalyptic number.

499968 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 499968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850304).

499968 is an abundant number, since it is smaller than the sum of its proper divisors (1200640).

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

499968 is a wasteful number, since it uses less digits than its factorization.

499968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 43 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 499968 is about 707.0841534075. The cubic root of 499968 is about 79.3683593345.

Adding to 499968 its product of digits (139968), we get a palindrome (639936).

Subtracting from 499968 its product of digits (139968), we obtain a square (360000 = 600²).

The spelling of 499968 in words is "four hundred ninety-nine thousand, nine hundred sixty-eight".