499321905 has 32 divisors (see below), whose sum is σ = 815900160. Its totient is φ = 260686080.

The previous prime is 499321883. The next prime is 499321939. The reversal of 499321905 is 509123994.

It is not a de Polignac number, because 499321905 - 2⁵ = 499321873 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 208344 + ... + 210726.

It is an arithmetic number, because the mean of its divisors is an integer number (25496880).

Almost surely, 2^499321905 is an apocalyptic number.

It is an amenable number.

499321905 is a deficient number, since it is larger than the sum of its proper divisors (316578255).

499321905 is a wasteful number, since it uses less digits than its factorization.

499321905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 499321905 is about 22345.5119654932. The cubic root of 499321905 is about 793.3415607547.

Subtracting 499321905 from its reverse (509123994), we obtain a palindrome (9802089).

The spelling of 499321905 in words is "four hundred ninety-nine million, three hundred twenty-one thousand, nine hundred five".