499999988 has 24 divisors (see below), whose sum is σ = 927747072. Its totient is φ = 234969984.

The previous prime is 499999931. The next prime is 499999993. The reversal of 499999988 is 889999994.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48845 + ... + 58187.

It is an arithmetic number, because the mean of its divisors is an integer number (38656128).

Almost surely, 2^499999988 is an apocalyptic number.

It is an amenable number.

499999988 is a deficient number, since it is larger than the sum of its proper divisors (427747084).

499999988 is a wasteful number, since it uses less digits than its factorization.

499999988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10151 (or 10149 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 74.

The square root of 499999988 is about 22360.6795066697. The cubic root of 499999988 is about 793.7005196345.

The spelling of 499999988 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-eight".