4166689 has 2 divisors, whose sum is σ = 4166690. Its totient is φ = 4166688.

The previous prime is 4166671. The next prime is 4166693. The reversal of 4166689 is 9866614.

4166689 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., 3150625 + 1016064 = 1775^2 + 1008^2 .

It is a cyclic number.

It is not a de Polignac number, because 4166689 - 2⁹ = 4166177 is a prime.

It is a super-2 number, since 2×4166689² = 34722594445442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4166629) 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, 2083344 + 2083345.

It is an arithmetic number, because the mean of its divisors is an integer number (2083345).

Almost surely, 2^4166689 is an apocalyptic number.

It is an amenable number.

4166689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4166689 is an equidigital number, since it uses as much as digits as its factorization.

4166689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 4166689 is about 2041.2469228391. The cubic root of 4166689 is about 160.9151849350.

The spelling of 4166689 in words is "four million, one hundred sixty-six thousand, six hundred eighty-nine".