499644778 has 64 divisors (see below), whose sum is σ = 841446144. Its totient is φ = 221760000.

The previous prime is 499644721. The next prime is 499644779. The reversal of 499644778 is 877446994.

It is not an unprimeable number, because it can be changed into a prime (499644779) 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 31 ways as a sum of consecutive naturals, for example, 4946928 + ... + 4947028.

It is an arithmetic number, because the mean of its divisors is an integer number (13147596).

Almost surely, 2^499644778 is an apocalyptic number.

499644778 is a deficient number, since it is larger than the sum of its proper divisors (341801366).

499644778 is a wasteful number, since it uses less digits than its factorization.

499644778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its digits is 12192768, while the sum is 58.

The square root of 499644778 is about 22352.7353583404. The cubic root of 499644778 is about 793.5125215294.

The spelling of 499644778 in words is "four hundred ninety-nine million, six hundred forty-four thousand, seven hundred seventy-eight".