499769920 has 112 divisors (see below), whose sum is σ = 1349288640. Its totient is φ = 174790656.

The previous prime is 499769911. The next prime is 499769953. The reversal of 499769920 is 29967994.

499769920 is a nontrivial binomial coefficient, being equal to C(31616, 2).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75879 + ... + 82201.

It is an arithmetic number, because the mean of its divisors is an integer number (12047220).

Almost surely, 2^499769920 is an apocalyptic number.

499769920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

499769920 is the 31615-th triangular number and also the 15808-th hexagonal number.

499769920 is the 10539-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499769920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674644320).

499769920 is an abundant number, since it is smaller than the sum of its proper divisors (849518720).

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

499769920 is a wasteful number, since it uses less digits than its factorization.

499769920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372 (or 6362 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 499769920 is about 22355.5344378076. The cubic root of 499769920 is about 793.5787642275.

The spelling of 499769920 in words is "four hundred ninety-nine million, seven hundred sixty-nine thousand, nine hundred twenty".