499555872 has 72 divisors (see below), whose sum is σ = 1424421180. Its totient is φ = 166072320.

The previous prime is 499555831. The next prime is 499555877. The reversal of 499555872 is 278555994.

499555872 is a `hidden beast` number, since 4 + 9 + 9 + 55 + 587 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 351787536 + 147768336 = 18756^2 + 12156^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (499555877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115672 + ... + 119912.

Almost surely, 2^499555872 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 499555872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712210590).

499555872 is an abundant number, since it is smaller than the sum of its proper divisors (924865308).

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

499555872 is a wasteful number, since it uses less digits than its factorization.

499555872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666 (or 4655 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

The square root of 499555872 is about 22350.7465647123. The cubic root of 499555872 is about 793.4654532840.

The spelling of 499555872 in words is "four hundred ninety-nine million, five hundred fifty-five thousand, eight hundred seventy-two".