499128864 has 192 divisors, whose sum is σ = 1475324928. Its totient is φ = 146764800.

The previous prime is 499128859. The next prime is 499128871. The reversal of 499128864 is 468821994.

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, 3810079 + ... + 3810209.

It is an arithmetic number, because the mean of its divisors is an integer number (7683984).

Almost surely, 2^499128864 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 499128864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737662464).

499128864 is an abundant number, since it is smaller than the sum of its proper divisors (976196064).

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

499128864 is a wasteful number, since it uses less digits than its factorization.

499128864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 263 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 499128864 is about 22341.1920899490. The cubic root of 499128864 is about 793.2393106252.

The spelling of 499128864 in words is "four hundred ninety-nine million, one hundred twenty-eight thousand, eight hundred sixty-four".