499689866 has 32 divisors (see below), whose sum is σ = 818404608. Its totient is φ = 227448000.

The previous prime is 499689863. The next prime is 499689871. The reversal of 499689866 is 668986994.

It is not an unprimeable number, because it can be changed into a prime (499689863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664991 + ... + 665741.

It is an arithmetic number, because the mean of its divisors is an integer number (25575144).

Almost surely, 2^499689866 is an apocalyptic number.

499689866 is a deficient number, since it is larger than the sum of its proper divisors (318714742).

499689866 is a wasteful number, since it uses less digits than its factorization.

499689866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its digits is 40310784, while the sum is 65.

The square root of 499689866 is about 22353.7438922432. The cubic root of 499689866 is about 793.5363896973.

The spelling of 499689866 in words is "four hundred ninety-nine million, six hundred eighty-nine thousand, eight hundred sixty-six".