3993741 has 6 divisors (see below), whose sum is σ = 5768750. Its totient is φ = 2662488.

The previous prime is 3993739. The next prime is 3993751. The reversal of 3993741 is 1473993.

It can be written as a sum of positive squares in only one way, i.e., 3884841 + 108900 = 1971^2 + 330^2 .

It is not a de Polignac number, because 3993741 - 2¹ = 3993739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3993696 and 3993705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221866 + ... + 221883.

Almost surely, 2^3993741 is an apocalyptic number.

It is an amenable number.

3993741 is a deficient number, since it is larger than the sum of its proper divisors (1775009).

3993741 is a wasteful number, since it uses less digits than its factorization.

3993741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443755 (or 443752 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 3993741 is about 1998.4346374100. The cubic root of 3993741 is about 158.6572657809.

The spelling of 3993741 in words is "three million, nine hundred ninety-three thousand, seven hundred forty-one".