9854085869 has 2 divisors, whose sum is σ = 9854085870. Its totient is φ = 9854085868.

The previous prime is 9854085863. The next prime is 9854085883. The reversal of 9854085869 is 9685804589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5423586025 + 4430499844 = 73645^2 + 66562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9854085869 is a prime.

It is a super-2 number, since 2×9854085869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9854085863) 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, 4927042934 + 4927042935.

It is an arithmetic number, because the mean of its divisors is an integer number (4927042935).

Almost surely, 2^9854085869 is an apocalyptic number.

It is an amenable number.

9854085869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9854085869 is an equidigital number, since it uses as much as digits as its factorization.

9854085869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 62.

The square root of 9854085869 is about 99267.7483828459. The cubic root of 9854085869 is about 2143.9045573794.

The spelling of 9854085869 in words is "nine billion, eight hundred fifty-four million, eighty-five thousand, eight hundred sixty-nine".