3909648 has 40 divisors (see below), whose sum is σ = 10320768. Its totient is φ = 1274752.

The previous prime is 3909641. The next prime is 3909667. The reversal of 3909648 is 8469093.

It is not an unprimeable number, because it can be changed into a prime (3909641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 3122.

Almost surely, 2^3909648 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 3909648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5160384).

3909648 is an abundant number, since it is smaller than the sum of its proper divisors (6411120).

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

3909648 is a wasteful number, since it uses less digits than its factorization.

3909648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3909648 is about 1977.2829842994. The cubic root of 3909648 is about 157.5357842602.

The spelling of 3909648 in words is "three million, nine hundred nine thousand, six hundred forty-eight".