490709331 has 24 divisors (see below), whose sum is σ = 816451584. Its totient is φ = 278192880.

The previous prime is 490709327. The next prime is 490709339. The reversal of 490709331 is 133907094.

It is not a de Polignac number, because 490709331 - 2² = 490709327 is a prime.

It is a super-2 number, since 2×490709331² = 481591295060935122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490709339) 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 23 ways as a sum of consecutive naturals, for example, 22665 + ... + 38666.

It is an arithmetic number, because the mean of its divisors is an integer number (34018816).

Almost surely, 2^490709331 is an apocalyptic number.

490709331 is a deficient number, since it is larger than the sum of its proper divisors (325742253).

490709331 is a wasteful number, since it uses less digits than its factorization.

490709331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61471 (or 61468 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 490709331 is about 22151.9599810039. The cubic root of 490709331 is about 788.7537531456.

The spelling of 490709331 in words is "four hundred ninety million, seven hundred nine thousand, three hundred thirty-one".