969 = 1 × 2 × 34 × 5 + 6 + 7 × 89
969 = 9 + 87 × 6 + 5 + 432 + 1
969 = 0^6 − 1^8 − 2^9 − 3^7 + 4^4 + 5^5 + 6^3 + 7^1 + 8^2 + 9^0
969 divides 50^6 - 1.
969 = binomial(17 + 2, 3) is the 17th tetrahedral number.
9-gonal (or enneagonal or nonagonal) numbers: a(n) = n*(7*n-5)/2, n = 17
a(n) = 1^2 + 3^2 + 5^2 + 7^2 + ... + (2*n-1)^2 = n*(4*n^2 - 1)/3. n = 9
Number k such that (7*10^k + 71)/3 is prime.
Numbers k such that both k+2 and k-2 are prime.
Sphenic number: Product of 3 distinct Primes, (List)
Factors: 1, 3, 17, 19, 51, 57, 323, 969
Nine hundred sixty-nine
Representations, Binary to Hexadecimal:
1111001001_2
1022220_3
33021_4
12334_5
4253_6
2553_7
1711_8
1286_9
801_11
689_12
597_13
4d3_14
449_15
3c9_16
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