2809141 has 2 divisors, whose sum is σ = 2809142. Its totient is φ = 2809140.

The previous prime is 2809117. The next prime is 2809181. The reversal of 2809141 is 1419082.

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., 2792241 + 16900 = 1671^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 2809141 - 2¹³ = 2800949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2809181) 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, 1404570 + 1404571.

It is an arithmetic number, because the mean of its divisors is an integer number (1404571).

2^2809141 is an apocalyptic number.

It is an amenable number.

2809141 is a deficient number, since it is larger than the sum of its proper divisors (1).

2809141 is an equidigital number, since it uses as much as digits as its factorization.

2809141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2809141 is about 1676.0492236208. The cubic root of 2809141 is about 141.0991874568.

The spelling of 2809141 in words is "two million, eight hundred nine thousand, one hundred forty-one".