499921420 has 24 divisors (see below), whose sum is σ = 1050260400. Its totient is φ = 199887552.

The previous prime is 499921391. The next prime is 499921421. The reversal of 499921420 is 24129994.

It is not an unprimeable number, because it can be changed into a prime (499921421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82246 + ... + 88114.

It is an arithmetic number, because the mean of its divisors is an integer number (43760850).

Almost surely, 2^499921420 is an apocalyptic number.

It is an amenable number.

499921420 is an abundant number, since it is smaller than the sum of its proper divisors (550338980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499921420 is a wasteful number, since it uses less digits than its factorization.

499921420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137 (or 10135 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 499921420 is about 22358.9226037392. The cubic root of 499921420 is about 793.6589444808.

The spelling of 499921420 in words is "four hundred ninety-nine million, nine hundred twenty-one thousand, four hundred twenty".