863366417 has 2 divisors, whose sum is σ = 863366418. Its totient is φ = 863366416.

The previous prime is 863366389. The next prime is 863366419. The reversal of 863366417 is 714663368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855504001 + 7862416 = 29249^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 863366417 - 2¹² = 863362321 is a prime.

Together with 863366419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (863366419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431683208 + 431683209.

It is an arithmetic number, because the mean of its divisors is an integer number (431683209).

Almost surely, 2^863366417 is an apocalyptic number.

It is an amenable number.

863366417 is a deficient number, since it is larger than the sum of its proper divisors (1).

863366417 is an equidigital number, since it uses as much as digits as its factorization.

863366417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The square root of 863366417 is about 29383.0974711653. The cubic root of 863366417 is about 952.2077616753.

The spelling of 863366417 in words is "eight hundred sixty-three million, three hundred sixty-six thousand, four hundred seventeen".