3949648 has 20 divisors (see below), whose sum is σ = 7900288. Its totient is φ = 1910880.

The previous prime is 3949643. The next prime is 3949651. The reversal of 3949648 is 8469493.

3949648 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3486 + ... + 4477.

Almost surely, 2^3949648 is an apocalyptic number.

It is an amenable number.

3949648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3949648 is a wasteful number, since it uses less digits than its factorization.

3949648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002 (or 7996 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 3949648 is about 1987.3721342517. The cubic root of 3949648 is about 158.0712171603.

The spelling of 3949648 in words is "three million, nine hundred forty-nine thousand, six hundred forty-eight".