4165849 has 2 divisors, whose sum is σ = 4165850. Its totient is φ = 4165848.

The previous prime is 4165787. The next prime is 4165927. The reversal of 4165849 is 9485614.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2866249 + 1299600 = 1693^2 + 1140^2 .

It is a cyclic number.

It is not a de Polignac number, because 4165849 - 2¹¹ = 4163801 is a prime.

It is not a weakly prime, because it can be changed into another prime (4165549) 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, 2082924 + 2082925.

It is an arithmetic number, because the mean of its divisors is an integer number (2082925).

Almost surely, 2^4165849 is an apocalyptic number.

It is an amenable number.

4165849 is a deficient number, since it is larger than the sum of its proper divisors (1).

4165849 is an equidigital number, since it uses as much as digits as its factorization.

4165849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 4165849 is about 2041.0411558810. The cubic root of 4165849 is about 160.9043707658.

The spelling of 4165849 in words is "four million, one hundred sixty-five thousand, eight hundred forty-nine".