499559481 has 20 divisors (see below), whose sum is σ = 771992100. Its totient is φ = 321554016.

The previous prime is 499559477. The next prime is 499559483. The reversal of 499559481 is 184955994.

499559481 is a `hidden beast` number, since 4 + 9 + 9 + 559 + 4 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 182007081 + 317552400 = 13491^2 + 17820^2 .

It is not a de Polignac number, because 499559481 - 2² = 499559477 is a prime.

It is a super-2 number, since 2×499559481² = 499119350113978722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (499559483) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 103986 + ... + 108683.

It is an arithmetic number, because the mean of its divisors is an integer number (38599605).

Almost surely, 2^499559481 is an apocalyptic number.

It is an amenable number.

499559481 is a deficient number, since it is larger than the sum of its proper divisors (272432619).

499559481 is a wasteful number, since it uses less digits than its factorization.

499559481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212710 (or 212701 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 499559481 is about 22350.8273001247. The cubic root of 499559481 is about 793.4673640545.

The spelling of 499559481 in words is "four hundred ninety-nine million, five hundred fifty-nine thousand, four hundred eighty-one".