499943805 has 16 divisors (see below), whose sum is σ = 800864064. Its totient is φ = 266318720.

The previous prime is 499943783. The next prime is 499943813. The reversal of 499943805 is 508349994.

It is not a de Polignac number, because 499943805 - 2¹⁸ = 499681661 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 6591 + ... + 32300.

It is an arithmetic number, because the mean of its divisors is an integer number (50054004).

Almost surely, 2^499943805 is an apocalyptic number.

It is an amenable number.

499943805 is a deficient number, since it is larger than the sum of its proper divisors (300920259).

499943805 is a wasteful number, since it uses less digits than its factorization.

499943805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39756.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 499943805 is about 22359.4231812898. The cubic root of 499943805 is about 793.6707902027.

The spelling of 499943805 in words is "four hundred ninety-nine million, nine hundred forty-three thousand, eight hundred five".