3966779 has 2 divisors, whose sum is σ = 3966780. Its totient is φ = 3966778.

The previous prime is 3966773. The next prime is 3966799. The reversal of 3966779 is 9776693.

It is a weak prime.

It is an emirp because it is prime and its reverse (9776693) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3966779 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 9⁵ + 6⁸ + 6⁸ + 7 + 7⁵ + 9⁶ .

It is not a weakly prime, because it can be changed into another prime (3966773) by changing a digit.

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 as a sum of consecutive naturals, namely, 1983389 + 1983390.

It is an arithmetic number, because the mean of its divisors is an integer number (1983390).

Almost surely, 2^3966779 is an apocalyptic number.

3966779 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966779 is an equidigital number, since it uses as much as digits as its factorization.

3966779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 47.

The square root of 3966779 is about 1991.6774337226. The cubic root of 3966779 is about 158.2994241943.

The spelling of 3966779 in words is "three million, nine hundred sixty-six thousand, seven hundred seventy-nine".