490724707009 has 4 divisors (see below), whose sum is σ = 507646248660. Its totient is φ = 473803165360.

The previous prime is 490724707007. The next prime is 490724707049. The reversal of 490724707009 is 900707427094.

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 154060175025 + 336664531984 = 392505^2 + 580228^2 .

It is a cyclic number.

It is not a de Polignac number, because 490724707009 - 2¹ = 490724707007 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490724707001) 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, 8460770782 + ... + 8460770839.

It is an arithmetic number, because the mean of its divisors is an integer number (126911562165).

Almost surely, 2^490724707009 is an apocalyptic number.

It is an amenable number.

490724707009 is a deficient number, since it is larger than the sum of its proper divisors (16921541651).

490724707009 is a wasteful number, since it uses less digits than its factorization.

490724707009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16921541650.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 490724707009 in words is "four hundred ninety billion, seven hundred twenty-four million, seven hundred seven thousand, nine".