3944988 has 18 divisors (see below), whose sum is σ = 9972144. Its totient is φ = 1314984.

The previous prime is 3944987. The next prime is 3944999. The reversal of 3944988 is 8894493.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54756 + ... + 54827.

It is an arithmetic number, because the mean of its divisors is an integer number (554008).

Almost surely, 2^3944988 is an apocalyptic number.

It is an amenable number.

3944988 is an abundant number, since it is smaller than the sum of its proper divisors (6027156).

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

3944988 is a wasteful number, since it uses less digits than its factorization.

3944988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109593 (or 109588 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3944988 is about 1986.1993857617. The cubic root of 3944988 is about 158.0090258156.

The spelling of 3944988 in words is "three million, nine hundred forty-four thousand, nine hundred eighty-eight".