3986529 has 4 divisors (see below), whose sum is σ = 5315376. Its totient is φ = 2657684.

The previous prime is 3986519. The next prime is 3986531. The reversal of 3986529 is 9256893.

3986529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9256893 = 3 ⋅3085631.

It is a cyclic number.

It is not a de Polignac number, because 3986529 - 2⁴ = 3986513 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3986519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 664419 + ... + 664424.

It is an arithmetic number, because the mean of its divisors is an integer number (1328844).

Almost surely, 2^3986529 is an apocalyptic number.

It is an amenable number.

3986529 is a deficient number, since it is larger than the sum of its proper divisors (1328847).

3986529 is a wasteful number, since it uses less digits than its factorization.

3986529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328846.

The product of its digits is 116640, while the sum is 42.

The square root of 3986529 is about 1996.6294097804. The cubic root of 3986529 is about 158.5617057821.

It can be divided in two parts, 39 and 86529, that added together give a palindrome (86568).

The spelling of 3986529 in words is "three million, nine hundred eighty-six thousand, five hundred twenty-nine".