3986724 has 48 divisors (see below), whose sum is σ = 10981376. Its totient is φ = 1101600.

The previous prime is 3986711. The next prime is 3986729. The reversal of 3986724 is 4276893.

3986724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986729) 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 15 ways as a sum of consecutive naturals, for example, 1839 + ... + 3369.

Almost surely, 2^3986724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3986724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5490688).

3986724 is an abundant number, since it is smaller than the sum of its proper divisors (6994652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3986724 is a wasteful number, since it uses less digits than its factorization.

3986724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1574 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 3986724 is about 1996.6782414801. The cubic root of 3986724 is about 158.5642910744.

The spelling of 3986724 in words is "three million, nine hundred eighty-six thousand, seven hundred twenty-four".