499476809 has 8 divisors (see below), whose sum is σ = 561285312. Its totient is φ = 441009360.

The previous prime is 499476781. The next prime is 499476821. The reversal of 499476809 is 908674994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 499476809 - 2¹⁶ = 499411273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499476829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834947 + ... + 835544.

It is an arithmetic number, because the mean of its divisors is an integer number (70160664).

Almost surely, 2^499476809 is an apocalyptic number.

It is an amenable number.

499476809 is a deficient number, since it is larger than the sum of its proper divisors (61808503).

499476809 is a wasteful number, since it uses less digits than its factorization.

499476809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670527.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 499476809 is about 22348.9778066023. The cubic root of 499476809 is about 793.4235913872.

The spelling of 499476809 in words is "four hundred ninety-nine million, four hundred seventy-six thousand, eight hundred nine".