3949644 has 48 divisors (see below), whose sum is σ = 10281600. Its totient is φ = 1172736.

The previous prime is 3949643. The next prime is 3949651. The reversal of 3949644 is 4469493.

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 15 ways as a sum of consecutive naturals, for example, 3367 + ... + 4385.

It is an arithmetic number, because the mean of its divisors is an integer number (214200).

Almost surely, 2^3949644 is an apocalyptic number.

3949644 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3949644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5140800).

3949644 is an abundant number, since it is smaller than the sum of its proper divisors (6331956).

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

3949644 is a wasteful number, since it uses less digits than its factorization.

3949644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 1060 counting only the distinct ones).

The product of its digits is 93312, while the sum is 39.

The square root of 3949644 is about 1987.3711278974. The cubic root of 3949644 is about 158.0711637981.

The spelling of 3949644 in words is "three million, nine hundred forty-nine thousand, six hundred forty-four".