499955843 has 4 divisors (see below), whose sum is σ = 500224080. Its totient is φ = 499687608.

The previous prime is 499955821. The next prime is 499955851. The reversal of 499955843 is 348559994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499955843 - 2²⁰ = 498907267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499955893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131303 + ... + 135056.

It is an arithmetic number, because the mean of its divisors is an integer number (125056020).

Almost surely, 2^499955843 is an apocalyptic number.

499955843 is a deficient number, since it is larger than the sum of its proper divisors (268237).

499955843 is a wasteful number, since it uses less digits than its factorization.

499955843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268236.

The product of its digits is 6998400, while the sum is 56.

The square root of 499955843 is about 22359.6923726602. The cubic root of 499955843 is about 793.6771603402.

The spelling of 499955843 in words is "four hundred ninety-nine million, nine hundred fifty-five thousand, eight hundred forty-three".