499993321 has 8 divisors (see below), whose sum is σ = 531214920. Its totient is φ = 469703808.

The previous prime is 499993267. The next prime is 499993331. The reversal of 499993321 is 123399994.

It can be written as a sum of positive squares in 4 ways, for example, as 34987225 + 465006096 = 5915^2 + 21564^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 499993321 - 2²³ = 491604713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499993331) 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 7 ways as a sum of consecutive naturals, for example, 231916 + ... + 234061.

It is an arithmetic number, because the mean of its divisors is an integer number (66401865).

Almost surely, 2^499993321 is an apocalyptic number.

It is an amenable number.

499993321 is a deficient number, since it is larger than the sum of its proper divisors (31221599).

499993321 is a wasteful number, since it uses less digits than its factorization.

499993321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466043.

The product of its digits is 472392, while the sum is 49.

The square root of 499993321 is about 22360.5304275189. The cubic root of 499993321 is about 793.6969918845.

The spelling of 499993321 in words is "four hundred ninety-nine million, nine hundred ninety-three thousand, three hundred twenty-one".