3993543 has 20 divisors (see below), whose sum is σ = 6098400. Its totient is φ = 2603232.

The previous prime is 3993527. The next prime is 3993547. The reversal of 3993543 is 3453993.

It is a happy number.

It is not a de Polignac number, because 3993543 - 2⁴ = 3993527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3993498 and 3993507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993547) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3283 + ... + 4331.

It is an arithmetic number, because the mean of its divisors is an integer number (304920).

Almost surely, 2^3993543 is an apocalyptic number.

3993543 is a deficient number, since it is larger than the sum of its proper divisors (2104857).

3993543 is a wasteful number, since it uses less digits than its factorization.

3993543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1099 counting only the distinct ones).

The product of its digits is 43740, while the sum is 36.

The square root of 3993543 is about 1998.3850980229. The cubic root of 3993543 is about 158.6546437900.

The spelling of 3993543 in words is "three million, nine hundred ninety-three thousand, five hundred forty-three".