499943660 has 24 divisors (see below), whose sum is σ = 1064671776. Its totient is φ = 197160320.

The previous prime is 499943659. The next prime is 499943669. The reversal of 499943660 is 66349994.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 499943599 and 499943608.

It is not an unprimeable number, because it can be changed into a prime (499943669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174617 + ... + 177456.

It is an arithmetic number, because the mean of its divisors is an integer number (44361324).

Almost surely, 2^499943660 is an apocalyptic number.

It is an amenable number.

499943660 is an abundant number, since it is smaller than the sum of its proper divisors (564728116).

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

499943660 is a wasteful number, since it uses less digits than its factorization.

499943660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352153 (or 352151 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 50.

The square root of 499943660 is about 22359.4199388088. The cubic root of 499943660 is about 793.6707134726.

The spelling of 499943660 in words is "four hundred ninety-nine million, nine hundred forty-three thousand, six hundred sixty".