39

39 < 38 | 40 >
Numbers 0 - 99
0	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	26	27	28	29
30	31	32	33	34	35	36	37	38	39
40	41	42	43	44	45	46	47	48	49
50	51	52	53	54	55	56	57	58	59
60	61	62	63	64	65	66	67	68	69
70	71	72	73	74	75	76	77	78	79
80	81	82	83	84	85	86	87	88	89
90	91	92	93	94	95	96	97	98	99

39 (thirty-nine) is a positive integer following 38 and preceding 40. Its ordinal form is written "thirty-ninth" or 39th.

Properties

39 is an odd composite number.

In The Penguin Dictionary of Curious and Interesting Numbers, 39 is described as

This appears to be the first uninteresting number, which of course makes it an especially interesting number, because it is the smallest number to have the property of being uninteresting. It is therefore also the first number to be simultaneously interesting and uninteresting.

In googology

In Greek-based number-naming systems, 39 is associated with prefix "enneatriaconta-", and with prefix "novemtriginti-" in Latin systems.