3986903 has 4 divisors (see below), whose sum is σ = 4196760. Its totient is φ = 3777048.

The previous prime is 3986897. The next prime is 3986921. The reversal of 3986903 is 3096893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3096893 = 1069 ⋅2897.

It is not a de Polignac number, because 3986903 - 2⁶ = 3986839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986923) 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, 104900 + ... + 104937.

It is an arithmetic number, because the mean of its divisors is an integer number (1049190).

Almost surely, 2^3986903 is an apocalyptic number.

3986903 is a deficient number, since it is larger than the sum of its proper divisors (209857).

3986903 is a wasteful number, since it uses less digits than its factorization.

3986903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209856.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 3986903 is about 1996.7230654249. The cubic root of 3986903 is about 158.5666641659.

The spelling of 3986903 in words is "three million, nine hundred eighty-six thousand, nine hundred three".