3978683 has 2 divisors, whose sum is σ = 3978684. Its totient is φ = 3978682.

The previous prime is 3978673. The next prime is 3978707. The reversal of 3978683 is 3868793.

It is a weak prime.

It is an emirp because it is prime and its reverse (3868793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3978683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3978643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989341 + 1989342.

It is an arithmetic number, because the mean of its divisors is an integer number (1989342).

Almost surely, 2^3978683 is an apocalyptic number.

3978683 is a deficient number, since it is larger than the sum of its proper divisors (1).

3978683 is an equidigital number, since it uses as much as digits as its factorization.

3978683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 3978683 is about 1994.6636307909. The cubic root of 3978683 is about 158.4576142107.

The spelling of 3978683 in words is "three million, nine hundred seventy-eight thousand, six hundred eighty-three".