3937

3937 is a natural number that follows 3936 and precedes 3938. It is an odd composite number classified as a semiprime because it has exactly two prime factors.

Its prime factorization is 31 × 127, where both 31 and 127 are primes. Notably, both factors are Mersenne primes (31 = 2^5 − 1 and 127 = 2^7 − 1). As a result, 3937 is the product of two Mersenne primes. The divisors of 3937 are 1, 31, 127, and 3937.

In various numeral systems, 3937 is represented as follows: in binary it is 111101100001; in octal it is 7541; in hexadecimal it is 0xF61 (often written as 0x0F61); and in Roman numerals it is MMMCMXXXVII.

From a basic arithmetic perspective, the sum of its decimal digits is 22, giving a digital root of 4. The number is not a palindrome in base 10, and its decimal form differs when read backward.

See also: semiprime, Mersenne prime, and the primes 31 and 127.