845786369 has 2 divisors, whose sum is σ = 845786370. Its totient is φ = 845786368.

The previous prime is 845786341. The next prime is 845786371. The reversal of 845786369 is 963687548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538240000 + 307546369 = 23200^2 + 17537^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-845786369 is a prime.

It is a super-3 number, since 3×845786369³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 845786371, 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 (845786309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422893184 + 422893185.

It is an arithmetic number, because the mean of its divisors is an integer number (422893185).

Almost surely, 2^845786369 is an apocalyptic number.

It is an amenable number.

845786369 is a deficient number, since it is larger than the sum of its proper divisors (1).

845786369 is an equidigital number, since it uses as much as digits as its factorization.

845786369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 56.

The square root of 845786369 is about 29082.4065200939. The cubic root of 845786369 is about 945.7003734587.

The spelling of 845786369 in words is "eight hundred forty-five million, seven hundred eighty-six thousand, three hundred sixty-nine".