499535221 has 4 divisors (see below), whose sum is σ = 502717132. Its totient is φ = 496353312.

The previous prime is 499535189. The next prime is 499535233. The reversal of 499535221 is 122535994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 136632721 + 362902500 = 11689^2 + 19050^2 .

It is a cyclic number.

It is not a de Polignac number, because 499535221 - 2⁵ = 499535189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499535521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1590720 + ... + 1591033.

It is an arithmetic number, because the mean of its divisors is an integer number (125679283).

Almost surely, 2^499535221 is an apocalyptic number.

It is an amenable number.

499535221 is a deficient number, since it is larger than the sum of its proper divisors (3181911).

499535221 is a wasteful number, since it uses less digits than its factorization.

499535221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181910.

The product of its digits is 97200, while the sum is 40.

The square root of 499535221 is about 22350.2845843179. The cubic root of 499535221 is about 793.4545195181.

The spelling of 499535221 in words is "four hundred ninety-nine million, five hundred thirty-five thousand, two hundred twenty-one".