809041 has 2 divisors, whose sum is σ = 809042. Its totient is φ = 809040.

The previous prime is 809023. The next prime is 809051. The reversal of 809041 is 140908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555025 + 254016 = 745^2 + 504^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-809041 is a prime.

It is not a weakly prime, because it can be changed into another prime (809051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404520 + 404521.

It is an arithmetic number, because the mean of its divisors is an integer number (404521).

2⁸⁰⁹⁰⁴¹ is an apocalyptic number.

It is an amenable number.

809041 is a deficient number, since it is larger than the sum of its proper divisors (1).

809041 is an equidigital number, since it uses as much as digits as its factorization.

809041 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 22.

The square root of 809041 is about 899.4670644332. The cubic root of 809041 is about 93.1801725522.

Adding to 809041 its reverse (140908), we get a palindrome (949949).

The spelling of 809041 in words is "eight hundred nine thousand, forty-one".