Among the countries with a GDP of over 1000000, how many of them have mountains higher than 1000?
SELECT COUNT(DISTINCT T1.Name) FROM country AS T1 INNER JOIN geo_mountain AS T2 ON T1.Code = T2.Country INNER JOIN economy AS T3 ON T3.Country = T1.Code INNER JOIN mountain AS T4 ON T4.Name = T2.Mountain WHERE T3.GDP > 1000000 AND T4.Height > 1000