3972844 has 6 divisors (see below), whose sum is σ = 6952484. Its totient is φ = 1986420.

The previous prime is 3972841. The next prime is 3972851. The reversal of 3972844 is 4482793.

It is a happy number.

3972844 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3972841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496602 + ... + 496609.

Almost surely, 2^3972844 is an apocalyptic number.

It is an amenable number.

3972844 is a deficient number, since it is larger than the sum of its proper divisors (2979640).

3972844 is a wasteful number, since it uses less digits than its factorization.

3972844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993215 (or 993213 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 3972844 is about 1993.1994380894. The cubic root of 3972844 is about 158.3800603238.

The spelling of 3972844 in words is "three million, nine hundred seventy-two thousand, eight hundred forty-four".