3913943 has 16 divisors (see below), whose sum is σ = 4583040. Its totient is φ = 3304800.

The previous prime is 3913907. The next prime is 3913963. The reversal of 3913943 is 3493193.

It is a cyclic number.

It is not a de Polignac number, because 3913943 - 2⁸ = 3913687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12596 + ... + 12902.

It is an arithmetic number, because the mean of its divisors is an integer number (286440).

Almost surely, 2^3913943 is an apocalyptic number.

3913943 is a deficient number, since it is larger than the sum of its proper divisors (669097).

3913943 is a wasteful number, since it uses less digits than its factorization.

3913943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398.

The product of its digits is 8748, while the sum is 32.

The square root of 3913943 is about 1978.3687724992. The cubic root of 3913943 is about 157.5934508818.

It can be divided in two parts, 391 and 3943, that added together give a palindrome (4334).

The spelling of 3913943 in words is "three million, nine hundred thirteen thousand, nine hundred forty-three".