3971903 has 8 divisors (see below), whose sum is σ = 4296768. Its totient is φ = 3649824.

The previous prime is 3971899. The next prime is 3971911. The reversal of 3971903 is 3091793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3971903 - 2² = 3971899 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3971903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050 + ... + 4152.

It is an arithmetic number, because the mean of its divisors is an integer number (537096).

Almost surely, 2^3971903 is an apocalyptic number.

3971903 is a deficient number, since it is larger than the sum of its proper divisors (324865).

3971903 is a wasteful number, since it uses less digits than its factorization.

3971903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 3971903 is about 1992.9633714647. The cubic root of 3971903 is about 158.3675548067.

The spelling of 3971903 in words is "three million, nine hundred seventy-one thousand, nine hundred three".