805261417 has 2 divisors, whose sum is σ = 805261418. Its totient is φ = 805261416.

The previous prime is 805261403. The next prime is 805261447. The reversal of 805261417 is 714162508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780699481 + 24561936 = 27941^2 + 4956^2 .

It is a cyclic number.

It is not a de Polignac number, because 805261417 - 2¹⁵ = 805228649 is a prime.

It is not a weakly prime, because it can be changed into another prime (805261447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402630708 + 402630709.

It is an arithmetic number, because the mean of its divisors is an integer number (402630709).

Almost surely, 2^805261417 is an apocalyptic number.

It is an amenable number.

805261417 is a deficient number, since it is larger than the sum of its proper divisors (1).

805261417 is an equidigital number, since it uses as much as digits as its factorization.

805261417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 805261417 is about 28377.1284135657. The cubic root of 805261417 is about 930.3484326654.

The spelling of 805261417 in words is "eight hundred five million, two hundred sixty-one thousand, four hundred seventeen".