It is known that a is a prime number, b is an odd number, and a**2+b=2009, then what is a+b=
已知a是质数，b是奇数，且a**2+b=2009，那么a+b=多少
<gadget id="calculator">2_009 - 4</gadget>
<output>2_005</output>

<gadget id="calculator">2 + 2_005</gadget>
<output>2_007</output>

<result>2_007</result>