3967189 has 2 divisors, whose sum is σ = 3967190. Its totient is φ = 3967188.

The previous prime is 3967157. The next prime is 3967193. The reversal of 3967189 is 9817693.

3967189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3900625 + 66564 = 1975^2 + 258^2 .

It is a cyclic number.

It is not a de Polignac number, because 3967189 - 2⁵ = 3967157 is a prime.

3967189 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3967289) 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, 1983594 + 1983595.

It is an arithmetic number, because the mean of its divisors is an integer number (1983595).

Almost surely, 2^3967189 is an apocalyptic number.

It is an amenable number.

3967189 is a deficient number, since it is larger than the sum of its proper divisors (1).

3967189 is an equidigital number, since it uses as much as digits as its factorization.

3967189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 3967189 is about 1991.7803593770. The cubic root of 3967189 is about 158.3048778657.

The spelling of 3967189 in words is "three million, nine hundred sixty-seven thousand, one hundred eighty-nine".