809141 has 2 divisors, whose sum is σ = 809142. Its totient is φ = 809140.

The previous prime is 809101. The next prime is 809143. The reversal of 809141 is 141908.

809141 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., 461041 + 348100 = 679^2 + 590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-809141 is a prime.

Together with 809143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809143) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404570 + 404571.

It is an arithmetic number, because the mean of its divisors is an integer number (404571).

2⁸⁰⁹¹⁴¹ is an apocalyptic number.

It is an amenable number.

809141 is a deficient number, since it is larger than the sum of its proper divisors (1).

809141 is an equidigital number, since it uses as much as digits as its factorization.

809141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 809141 is about 899.5226511878. The cubic root of 809141 is about 93.1840115144.

The spelling of 809141 in words is "eight hundred nine thousand, one hundred forty-one".