3996539 has 4 divisors (see below), whose sum is σ = 4017024. Its totient is φ = 3976056.

The previous prime is 3996529. The next prime is 3996541. The reversal of 3996539 is 9356993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9356993 = 523 ⋅17891.

It is a cyclic number.

It is not a de Polignac number, because 3996539 - 2⁴ = 3996523 is a prime.

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 3996539.

It is not an unprimeable number, because it can be changed into a prime (3996529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9947 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (1004256).

Almost surely, 2^3996539 is an apocalyptic number.

3996539 is a deficient number, since it is larger than the sum of its proper divisors (20485).

3996539 is a wasteful number, since it uses less digits than its factorization.

3996539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20484.

The product of its digits is 196830, while the sum is 44.

The square root of 3996539 is about 1999.1345627546. The cubic root of 3996539 is about 158.6943086938.

It can be divided in two parts, 39965 and 39, that added together give a palindrome (40004).

The spelling of 3996539 in words is "three million, nine hundred ninety-six thousand, five hundred thirty-nine".