490790985 has 8 divisors (see below), whose sum is σ = 785265600. Its totient is φ = 261755184.

The previous prime is 490790981. The next prime is 490790999. The reversal of 490790985 is 589097094.

It is a happy number.

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

It is not a de Polignac number, because 490790985 - 2² = 490790981 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (490790981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16359685 + ... + 16359714.

It is an arithmetic number, because the mean of its divisors is an integer number (98158200).

Almost surely, 2^490790985 is an apocalyptic number.

It is an amenable number.

490790985 is a deficient number, since it is larger than the sum of its proper divisors (294474615).

490790985 is a wasteful number, since it uses less digits than its factorization.

490790985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32719407.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 490790985 is about 22153.8029466726. The cubic root of 490790985 is about 788.7975002432.

The spelling of 490790985 in words is "four hundred ninety million, seven hundred ninety thousand, nine hundred eighty-five".