3927644 has 36 divisors (see below), whose sum is σ = 8283240. Its totient is φ = 1622880.

The previous prime is 3927611. The next prime is 3927647. The reversal of 3927644 is 4467293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3927647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5339 + ... + 6029.

It is an arithmetic number, because the mean of its divisors is an integer number (230090).

Almost surely, 2^3927644 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 3927644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4141620).

3927644 is an abundant number, since it is smaller than the sum of its proper divisors (4355596).

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

3927644 is a wasteful number, since it uses less digits than its factorization.

3927644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 729 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 3927644 is about 1981.8284486807. The cubic root of 3927644 is about 157.7771252737. Note that the first 3 decimals are identical.

The spelling of 3927644 in words is "three million, nine hundred twenty-seven thousand, six hundred forty-four".