3978772 has 12 divisors (see below), whose sum is σ = 7957600. Its totient is φ = 1705176.

The previous prime is 3978761. The next prime is 3978773. The reversal of 3978772 is 2778793.

3978772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

3978772 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71022 + ... + 71077.

Almost surely, 2^3978772 is an apocalyptic number.

It is an amenable number.

3978772 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.

3978772 is a wasteful number, since it uses less digits than its factorization.

3978772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142110 (or 142108 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The square root of 3978772 is about 1994.6859401921. The cubic root of 3978772 is about 158.4587957258.

The spelling of 3978772 in words is "three million, nine hundred seventy-eight thousand, seven hundred seventy-two".