499966140 has 96 divisors (see below), whose sum is σ = 1450874880. Its totient is φ = 128505600.

The previous prime is 499966081. The next prime is 499966183. The reversal of 499966140 is 41669994.

It is a super-2 number, since 2×499966140² = 499932282292999200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 499966140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 723195 + ... + 723885.

It is an arithmetic number, because the mean of its divisors is an integer number (15113280).

Almost surely, 2^499966140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499966140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725437440).

499966140 is an abundant number, since it is smaller than the sum of its proper divisors (950908740).

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

499966140 is a wasteful number, since it uses less digits than its factorization.

499966140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 499966140 is about 22359.9226295620. The cubic root of 499966140 is about 793.6826091131.

The spelling of 499966140 in words is "four hundred ninety-nine million, nine hundred sixty-six thousand, one hundred forty".