3978376 has 8 divisors (see below), whose sum is σ = 7459470. Its totient is φ = 1989184.

The previous prime is 3978349. The next prime is 3978421. The reversal of 3978376 is 6738793.

It can be written as a sum of positive squares in only one way, i.e., 2220100 + 1758276 = 1490^2 + 1326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248641 + ... + 248656.

Almost surely, 2^3978376 is an apocalyptic number.

It is an amenable number.

3978376 is a deficient number, since it is larger than the sum of its proper divisors (3481094).

3978376 is a wasteful number, since it uses less digits than its factorization.

3978376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497303 (or 497299 counting only the distinct ones).

The product of its digits is 190512, while the sum is 43.

The square root of 3978376 is about 1994.5866739753. The cubic root of 3978376 is about 158.4535385120.

The spelling of 3978376 in words is "three million, nine hundred seventy-eight thousand, three hundred seventy-six".