3897 has 6 divisors (see below), whose sum is σ = 5642.
Its totient is φ = 2592.
The previous prime is 3889. The next prime is 3907. The reversal of 3897 is 7983.
It is a happy number.
It can be written as a sum of positive squares in only one way, i.e., 2601 + 1296 = 51^2 + 36^2
It is not a de Polignac number, because 3897 - 23 = 3889 is a prime.
It is a Duffinian number.
3897 is a lucky number.
It is a plaindrome in base 15.
It is a nialpdrome in base 9.
It is a self number, because there is not a number n which added to its sum of digits gives 3897.
It is not an unprimeable number, because it can be changed into a prime (3847) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208 + ... + 225.
23897 is an apocalyptic number.
It is an amenable number.
3897 is a deficient number, since it is larger than the sum of its proper divisors (1745).
3897 is a wasteful number, since it uses less digits than its factorization.
3897 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 439 (or 436 counting only the distinct ones).
The product of its digits is 1512, while the sum is 27.
The square root of 3897 is about 62.4259561401.
The cubic root of 3897 is about 15.7365720774.
It can be divided in two parts, 3 and 897, that added together give a square (900 = 302).
The spelling of 3897 in words is "three thousand, eight hundred ninety-seven".