Incinerated and Obliterated by a 4.4 Nonillion Lb Sphere of Flaming Gas
The surface of the sun is about 10,000 degrees Fahrenheit. It is, after all, a gargantuan sphere of flaming gas that's about 1.3 million times the size of Earth. If you were to stand on the sun (which you can't, because it's a giant ball of gas, not a solid planet), the searing heat would instantly disintegrate you. Your particles would be scattered by solarwinds.