499991830 has 32 divisors (see below), whose sum is σ = 970248384. Its totient is φ = 184415616.

The previous prime is 499991827. The next prime is 499991837. The reversal of 499991830 is 38199994.

499991830 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499991837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187567 + ... + 190213.

It is an arithmetic number, because the mean of its divisors is an integer number (30320262).

Almost surely, 2^499991830 is an apocalyptic number.

499991830 is a deficient number, since it is larger than the sum of its proper divisors (470256554).

499991830 is a wasteful number, since it uses less digits than its factorization.

499991830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 499991830 is about 22360.4970874979. The cubic root of 499991830 is about 793.6962029384.

The spelling of 499991830 in words is "four hundred ninety-nine million, nine hundred ninety-one thousand, eight hundred thirty".