499905000 has 480 divisors, whose sum is σ = 2073086400. Its totient is φ = 109296000.

The previous prime is 499904989. The next prime is 499905011. The reversal of 499905000 is 509994.

It is an interprime number because it is at equal distance from previous prime (499904989) and next prime (499905011).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 21734989 + ... + 21735011.

It is an arithmetic number, because the mean of its divisors is an integer number (4318930).

Almost surely, 2^499905000 is an apocalyptic number.

499905000 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 499905000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1036543200).

499905000 is an abundant number, since it is smaller than the sum of its proper divisors (1573181400).

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

499905000 is a wasteful number, since it uses less digits than its factorization.

499905000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 499905000 is about 22358.5554095071. Note that the first 3 decimals coincide. The cubic root of 499905000 is about 793.6502551002.

The spelling of 499905000 in words is "four hundred ninety-nine million, nine hundred five thousand".