4

4 (ʻehā) he helu maʻamau ma waena o ka 3 a me ka 5. He helu pālua ia (2 × 2 = 4), a he helu ʻoi (composite number). Ma ka moʻomeheu Hawaiʻi, he koʻikoʻi ka helu ʻehā no nā kūkulu ʻehā o ka honua a me nā akua nui ʻehā: Kāne, Kū, Lono, a me Kanaloa. Ma nā moʻolelo kahiko o ʻĀkia Hikina, kū ka 4 ma ke ʻano he helu pōʻino, no ka mea, like ke kani o "4" me ka huaʻōlelo no ka make ma kēia mau ʻōlelo.

 Makemakika 
Ma ka makemakika, aia ʻehā hana maʻamau: ka huinahelu (+), ka lawenahelu (−), ka hoʻonui (×), a me ka māhele (÷). He helu pālua ka 4, a he helu piha, a he helu Harshad. ʻO ia kekahi o nā helu Harshad a pau ʻehā.

 Nā māhele 
He helu māhele ka 4 ma o ka 1, 2, a me ka 4. He helu pālua maikaʻi loa ia, no ka mea, hiki ke māhele ʻia e ka 2 hoʻokahi manawa wale nō (4 = 2 × 2).

 Nā helu 

 Nā helu maʻamau 
 Hoʻonui Multiplication  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  50  100  1000 4 × x  4  8  12  16  20  24  28  32  36  40  44  48  52  56  60  64  68  72  76  80  84  88  92  96  100  200  400  4000

 Māhele Division  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 4 ÷ x  4  2  1.3  1  0.8  0.6  0.571428  0.5  0.4  0.4  0.36  0.3  0.307692  0.285714  0.26  0.25 x ÷ 4  0.25  0.5  0.75  1  1.25  1.5  1.75  2  2.25  2.5  2.75  3  3.25  3.5  3.75  4

 Mana Exponentiation  1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 4ˣ  4  16  64  256  1024  4096  16384  65536  262144  1048576  4194304  16777216  67108864  268435456  1073741824  4294967296 x⁴  1  16  81  256  625  1296  2401  4096  6561  10000  14641  20736  28561  38416  50625  65536

 Anahonua 
He nui nā mea geometry me ʻehā ʻaoʻao a i ʻole ʻehā huina. ʻO ka huinahā loa kekahi laʻana maʻamau, me ʻehā huina kūpono (90°) a me nā ʻaoʻao kūʻē like. ʻO ka paʻaʻilihā he pōhaku me ʻehā ʻaoʻao a me ʻehā kihi. Wahi a ka four-color theorem, hiki ke hoʻohana i ʻehā waihoʻoluʻu wale nō e kaha i kekahi palapala ʻāina, i ʻole e pili nā wahi e kokoke ana ma ke ʻano like.

 Ma ka moʻomeheu 
 ʻIke Hawaiʻi 
Ma ka moʻomeheu Hawaiʻi, he koʻikoʻi ka helu ʻehā ma nā ʻano like ʻole. Aia nā kūkulu ʻehā, ʻo ia hoʻi nā kukuna ʻehā o ka honua. Aia nā akua nui ʻehā: ʻo Kāne, Kū, Lono, a me Kanaloa. Ua ʻike ʻia nā kino ʻehā o Kāne: ka lā, ke kai, ka ua, a me ka makani. Ma kēia mau hiʻohiʻona, hōʻike ʻia ka pilina o ka helu ʻehā i ka ʻāina a me ke ao holoʻokoʻa.

 Nā moʻomeheu ʻē aʻe 
Ma Kina, Iāpana, a me Kōlea, he helu pōʻino ka 4 no ka mea like ke kani me ka huaʻōlelo no ka make. No kēia kumu, ʻaʻohe helu 4 ma nā hale kiʻekiʻe a ma nā hōkele. Ma Zia, he helu kapu ka 4, a hoʻohana ʻia ma nā hana kapu. Ma ka honua holoʻokoʻa, aia ʻehā kau o ka makahiki: ka hoʻoilo, ke kupulau, ke kauwela, a me ka hāʻulelau. He ʻehā pule ma kēlā me kēia mahina mahina (lunar month), a no laila, he mea nui ka 4 i ka helu ʻana i ka manawa.

 Nā Kūmole 

 Nā Loulou I Waho 
 Nā ʻike no ka helu ʻehā ma Ulukau
 Ka wehewehe ʻana o ka ʻehā

 E nānā pū 
 3
 5
 Helu
 Makemakika

Māhele:Helu
Māhele:Makemakika