499758813 has 6 divisors (see below), whose sum is σ = 721873854. Its totient is φ = 333172536.

The previous prime is 499758797. The next prime is 499758817. The reversal of 499758813 is 318857994.

499758813 is a `hidden beast` number, since 49 + 9 + 7 + 588 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 262537209 + 237221604 = 16203^2 + 15402^2 .

It is not a de Polignac number, because 499758813 - 2⁴ = 499758797 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 499758813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499758817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27764370 + ... + 27764387.

It is an arithmetic number, because the mean of its divisors is an integer number (120312309).

Almost surely, 2^499758813 is an apocalyptic number.

It is an amenable number.

499758813 is a deficient number, since it is larger than the sum of its proper divisors (222115041).

499758813 is a wasteful number, since it uses less digits than its factorization.

499758813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55528763 (or 55528760 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 499758813 is about 22355.2860191947. The cubic root of 499758813 is about 793.5728852925.

The spelling of 499758813 in words is "four hundred ninety-nine million, seven hundred fifty-eight thousand, eight hundred thirteen".