3978764 has 6 divisors (see below), whose sum is σ = 6962844. Its totient is φ = 1989380.

The previous prime is 3978761. The next prime is 3978773. The reversal of 3978764 is 4678793.

3978764 is digitally balanced in base 2, 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 (3978761) 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 as a sum of consecutive naturals, namely, 497342 + ... + 497349.

It is an arithmetic number, because the mean of its divisors is an integer number (1160474).

Almost surely, 2^3978764 is an apocalyptic number.

It is an amenable number.

3978764 is a deficient number, since it is larger than the sum of its proper divisors (2984080).

3978764 is a wasteful number, since it uses less digits than its factorization.

3978764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994695 (or 994693 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 3978764 is about 1994.6839348629. The cubic root of 3978764 is about 158.4586895229.

The spelling of 3978764 in words is "three million, nine hundred seventy-eight thousand, seven hundred sixty-four".