3903 has 4 divisors (see below), whose sum is σ = 5208. Its totient is φ = 2600.

The previous prime is 3889. The next prime is 3907. The reversal of 3903 is 3093.

3903 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3093 = 3 ⋅1031.

It is a cyclic number.

It is not a de Polignac number, because 3903 - 2⁹ = 3391 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 39 and 3 contains 3903 itself.

It is a D-number.

3903 is an undulating number in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648 + ... + 653.

It is an arithmetic number, because the mean of its divisors is an integer number (1302).

3903 is a deficient number, since it is larger than the sum of its proper divisors (1305).

3903 is a wasteful number, since it uses less digits than its factorization.

3903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 3903 is about 62.4739945897. The cubic root of 3903 is about 15.7446441855.

Adding to 3903 its reverse (3093), we get a palindrome (6996).

It can be divided in two parts, 390 and 3, that added together give a palindrome (393).

The spelling of 3903 in words is "three thousand, nine hundred three".