3941391 has 4 divisors (see below), whose sum is σ = 5255192. Its totient is φ = 2627592.

The previous prime is 3941381. The next prime is 3941411. The reversal of 3941391 is 1931493.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3941391 - 2⁵ = 3941359 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3941381) 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, 656896 + ... + 656901.

It is an arithmetic number, because the mean of its divisors is an integer number (1313798).

Almost surely, 2^3941391 is an apocalyptic number.

3941391 is a deficient number, since it is larger than the sum of its proper divisors (1313801).

3941391 is a wasteful number, since it uses less digits than its factorization.

3941391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313800.

The product of its digits is 2916, while the sum is 30.

The square root of 3941391 is about 1985.2936810457. The cubic root of 3941391 is about 157.9609875373.

The spelling of 3941391 in words is "three million, nine hundred forty-one thousand, three hundred ninety-one".