diff --git a/crates/polars-ops/src/series/ops/horizontal.rs b/crates/polars-ops/src/series/ops/horizontal.rs
index 75a69201909..530fb861a71 100644
--- a/crates/polars-ops/src/series/ops/horizontal.rs
+++ b/crates/polars-ops/src/series/ops/horizontal.rs
@@ -242,9 +242,8 @@ pub fn sum_horizontal(
 
     // If we have any null columns and null strategy is not `Ignore`, we can return immediately.
     let num_cols = non_null_cols.len();
-    let name = columns[0].name();
     if num_cols == 0 {
-        return Ok(Some(columns[0].clone().with_name(name.clone())));
+        return Ok(Some(columns[0].clone()));
     } else if !ignore_nulls && non_null_cols.len() < columns.len() {
         // We must determine the correct return dtype.
         let return_dtype = match dtypes_to_supertype(non_null_cols.iter().map(|c| c.dtype()))? {
@@ -252,12 +251,10 @@ pub fn sum_horizontal(
             dt => dt,
         };
         return Ok(Some(Column::full_null(
-            name.clone(),
+            columns[0].name().clone(),
             columns[0].len(),
             &return_dtype,
         )));
-    } else if !ignore_nulls && non_null_cols.len() < columns.len() {
-        return null_with_supertype(non_null_cols, false);
     }
 
     match non_null_cols.len() {
@@ -266,7 +263,7 @@ pub fn sum_horizontal(
                 Ok(None)
             } else {
                 // all columns are null dtype, so result is null dtype
-                Ok(Some(columns[0].clone().with_name(name.clone())))
+                Ok(Some(columns[0].clone()))
             }
         },
         1 => Ok(Some(
@@ -275,7 +272,6 @@ pub fn sum_horizontal(
             } else {
                 non_null_cols[0].clone()
             })?
-            .with_name(name.clone())
             .into(),
         )),
         2 => sum_fn(non_null_cols[0].clone(), non_null_cols[1].clone())
@@ -357,7 +353,7 @@ pub fn mean_horizontal(
             if !ignore_nulls && dtype == &DataType::Null {
                 // The presence of a single null column guarantees the output is all-null.
                 return null_with_supertype(columns, true);
-            } else if !(dtype.is_numeric()
+            } else if !(dtype.is_primitive_numeric()
                 || dtype.is_decimal()
                 || dtype.is_bool()
                 || dtype.is_temporal()