499978886 has 32 divisors (see below), whose sum is σ = 836510976. Its totient is φ = 222220000.

The previous prime is 499978877. The next prime is 499978889. The reversal of 499978886 is 688879994.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499978889) 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, 183071 + ... + 185781.

It is an arithmetic number, because the mean of its divisors is an integer number (26140968).

Almost surely, 2^499978886 is an apocalyptic number.

499978886 is a deficient number, since it is larger than the sum of its proper divisors (336532090).

499978886 is a wasteful number, since it uses less digits than its factorization.

499978886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908.

The product of its digits is 62705664, while the sum is 68.

The square root of 499978886 is about 22360.2076466208. The cubic root of 499978886 is about 793.6893536982.

The spelling of 499978886 in words is "four hundred ninety-nine million, nine hundred seventy-eight thousand, eight hundred eighty-six".