499999872 has 128 divisors (see below), whose sum is σ = 1376559360. Its totient is φ = 160699392.

The previous prime is 499999853. The next prime is 499999873. The reversal of 499999872 is 278999994.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999873) 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 15 ways as a sum of consecutive naturals, for example, 1766643 + ... + 1766925.

It is an arithmetic number, because the mean of its divisors is an integer number (10754370).

Almost surely, 2^499999872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499999872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688279680).

499999872 is an abundant number, since it is smaller than the sum of its proper divisors (876559488).

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

499999872 is a wasteful number, since it uses less digits than its factorization.

499999872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450 (or 438 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 66.

The square root of 499999872 is about 22360.6769128307. The cubic root of 499999872 is about 793.7004582550.

The spelling of 499999872 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred seventy-two".