3944720 has 40 divisors (see below), whose sum is σ = 9879576. Its totient is φ = 1456128.

The previous prime is 3944711. The next prime is 3944729. The reversal of 3944720 is 274493.

It is an interprime number because it is at equal distance from previous prime (3944711) and next prime (3944729).

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 3936256 = 92^2 + 1984^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944729) 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, 857 + ... + 2936.

Almost surely, 2^3944720 is an apocalyptic number.

It is an amenable number.

3944720 is an abundant number, since it is smaller than the sum of its proper divisors (5934856).

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

3944720 is a wasteful number, since it uses less digits than its factorization.

3944720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3819 (or 3813 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3944720 is about 1986.1319190829. The cubic root of 3944720 is about 158.0054476571.

It can be divided in two parts, 3944 and 720, that added together give a palindrome (4664).

The spelling of 3944720 in words is "three million, nine hundred forty-four thousand, seven hundred twenty".