3988

3988 is a natural number that follows 3987 and precedes 3989. It is an even integer and is composite.

In its prime factorization, 3988 equals 2 squared times 997, i.e., 3988 = 2^2 × 997. Therefore its divisors are 1, 2, 4, 997, 1994, and 3988; it is not a prime, nor a perfect square. The sum of its digits is 28, indicating it is not divisible by 3 or 9. In base 10, it is written with four digits.

Roman numerals, 3988 is MMMCMLXXXVIII.

Outside pure math, 3988 may appear as a catalog or model number in various contexts, but it has no single widely recognized significance.