3968978 has 16 divisors (see below), whose sum is σ = 6445656. Its totient is φ = 1822080.

The previous prime is 3968957. The next prime is 3968981. The reversal of 3968978 is 8798693.

It can be written as a sum of positive squares in 4 ways, for example, as 3301489 + 667489 = 1817^2 + 817^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7358 + ... + 7878.

Almost surely, 2^3968978 is an apocalyptic number.

3968978 is a deficient number, since it is larger than the sum of its proper divisors (2476678).

3968978 is a wasteful number, since it uses less digits than its factorization.

3968978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829.

The product of its digits is 653184, while the sum is 50.

The square root of 3968978 is about 1992.2294044612. The cubic root of 3968978 is about 158.3286700997.

The spelling of 3968978 in words is "three million, nine hundred sixty-eight thousand, nine hundred seventy-eight".