490445569 has 4 divisors (see below), whose sum is σ = 493737300. Its totient is φ = 487153840.

The previous prime is 490445533. The next prime is 490445591. The reversal of 490445569 is 965544094.

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 137757169 + 352688400 = 11737^2 + 18780^2 .

It is a cyclic number.

It is not a de Polignac number, because 490445569 - 2¹⁵ = 490412801 is a prime.

It is a super-2 number, since 2×490445569² = 481073712303467522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490442569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645642 + ... + 1645939.

It is an arithmetic number, because the mean of its divisors is an integer number (123434325).

Almost surely, 2^490445569 is an apocalyptic number.

It is an amenable number.

490445569 is a deficient number, since it is larger than the sum of its proper divisors (3291731).

490445569 is a wasteful number, since it uses less digits than its factorization.

490445569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291730.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 490445569 is about 22146.0057120917. The cubic root of 490445569 is about 788.6124063641.

The spelling of 490445569 in words is "four hundred ninety million, four hundred forty-five thousand, five hundred sixty-nine".