It's about one-fifteen-thousandth as tall as Mount Everest.
In other words, the height of Mount Everest is 13,800 times 0.0004 miles.(a.k.a. Mount Chomolungma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest is 5.50 miles above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak — raising it by 0.000002490 miles and shifting it to the northeast by 0.00000280 miles each year.
It's about one-fifteen-thousandth as tall as a Mauna Loa.
In other words, 0.0004 miles is 0.000070220 times the height of a Mauna Loa, and the height of a Mauna Loa is 14,240 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 5.7170 miles above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about one-fifteen-thousandth as tall as The Challenger Deep (Marianas Trench).
In other words, 0.0004 miles is 0.0000590480 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 16,935 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 6.77420 miles below sea level. There has been only one manned expedition to the bottom of Challenger Deep — a 1960 voyage that took 4 hours and 48 minutes to reach the bottom.
It's about one-fifteen-thousandth as tall as Maxwell Montes.
In other words, the height of Maxwell Montes is 17,000 times 0.0004 miles.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 6.80 miles. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about one-forty-thousandth as tall as Olympus Mons.
In other words, the height of Olympus Mons is 42,000 times 0.0004 miles.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 17 miles. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.
It's about 85,000 times as long as a Red Blood Cell.
In other words, the length of a Red Blood Cell is 0.0000120 times 0.0004 miles.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles) An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.
It's about 100,000 times as long as a Nucleus (Cellular).
In other words, 0.0004 miles is 110,000 times the length of a Nucleus (Cellular), and the length of a Nucleus (Cellular) is 0.00000910 times that amount.(for animal cell)
The nucleus of an animal cell measures an average of 0.00000000370 miles. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.