499943665 has 32 divisors (see below), whose sum is σ = 670473216. Its totient is φ = 355380480.

The previous prime is 499943659. The next prime is 499943669. The reversal of 499943665 is 566349994.

It is not a de Polignac number, because 499943665 - 2⁷ = 499943537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499943669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456859 + ... + 457951.

It is an arithmetic number, because the mean of its divisors is an integer number (20952288).

Almost surely, 2^499943665 is an apocalyptic number.

It is an amenable number.

499943665 is a deficient number, since it is larger than the sum of its proper divisors (170529551).

499943665 is a wasteful number, since it uses less digits than its factorization.

499943665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 6298560, while the sum is 55.

The square root of 499943665 is about 22359.4200506185. The cubic root of 499943665 is about 793.6707161184.

The spelling of 499943665 in words is "four hundred ninety-nine million, nine hundred forty-three thousand, six hundred sixty-five".