2169841 has 2 divisors, whose sum is σ = 2169842. Its totient is φ = 2169840.

The previous prime is 2169833. The next prime is 2169859. The reversal of 2169841 is 1489612.

It is a happy number.

2169841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1638400 + 531441 = 1280^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 2169841 - 2³ = 2169833 is a prime.

It is not a weakly prime, because it can be changed into another prime (2169821) 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, 1084920 + 1084921.

It is an arithmetic number, because the mean of its divisors is an integer number (1084921).

2^2169841 is an apocalyptic number.

It is an amenable number.

2169841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2169841 is an equidigital number, since it uses as much as digits as its factorization.

2169841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 2169841 is about 1473.0380171605. The cubic root of 2169841 is about 129.4620969061.

The spelling of 2169841 in words is "two million, one hundred sixty-nine thousand, eight hundred forty-one".