499840000 has 220 divisors, whose sum is σ = 1381282848. Its totient is φ = 179200000.

The previous prime is 499839961. The next prime is 499840009. The reversal of 499840000 is 48994.

It is a tau number, because it is divible by the number of its divisors (220).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499840009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7039965 + ... + 7040035.

Almost surely, 2^499840000 is an apocalyptic number.

499840000 is a gapful number since it is divisible by the number (40) 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 499840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690641424).

499840000 is an abundant number, since it is smaller than the sum of its proper divisors (881442848).

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

499840000 is an equidigital number, since it uses as much as digits as its factorization.

499840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 499840000 is about 22357.1017799714. The cubic root of 499840000 is about 793.6158555625.

Adding to 499840000 its reverse (48994), we get a palindrome (499888994).

The spelling of 499840000 in words is "four hundred ninety-nine million, eight hundred forty thousand".