4390 = 12 + 3 × 4 + 56 × 78 + 9
4390 = (9 + 8) × (7 × 6 + 5 × 43) + 21
4390 = 0^6 + 1^8 + 2^9 − 3^7 + 4^2 + 5^5 + 6^0 + 7^4 + 8^3 + 9^1
Number that is the sum of ten fourth powers in exactly six ways.
a(n) = 4*n^2 - 7*n + 4, n = 34
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 2, 5, 10, 439, 878, 2195, 4390
Four thousand, three hundred ninety
1000100100110_2
20000121_3
1010212_4
120030_5
32154_6
15541_7
10446_8
6017_9
3331_11
265a_12
1cc9_13
1858_14
147a_15
1126_16
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Undergraduate Texts in Mathematics
