845441 has 2 divisors, whose sum is σ = 845442. Its totient is φ = 845440.

The previous prime is 845431. The next prime is 845447. The reversal of 845441 is 144548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 384400 = 679^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 845441 - 2¹⁴ = 829057 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p₆₇₂₉₂ and since 845441 and 67292 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845441.

It is not a weakly prime, because it can be changed into another prime (845447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422720 + 422721.

It is an arithmetic number, because the mean of its divisors is an integer number (422721).

2⁸⁴⁵⁴⁴¹ is an apocalyptic number.

It is an amenable number.

845441 is a deficient number, since it is larger than the sum of its proper divisors (1).

845441 is an equidigital number, since it uses as much as digits as its factorization.

845441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 26.

The square root of 845441 is about 919.4786566310. The cubic root of 845441 is about 94.5571633282.

Adding to 845441 its reverse (144548), we get a palindrome (989989).

The spelling of 845441 in words is "eight hundred forty-five thousand, four hundred forty-one".