9856689361 has 4 divisors (see below), whose sum is σ = 9857156452. Its totient is φ = 9856222272.

The previous prime is 9856689343. The next prime is 9856689371. The reversal of 9856689361 is 1639866589.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207360000 + 9649329361 = 14400^2 + 98231^2 .

It is a cyclic number.

It is not a de Polignac number, because 9856689361 - 2¹³ = 9856681169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9856689361.

It is not an unprimeable number, because it can be changed into a prime (9856689341) 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 in 3 ways as a sum of consecutive naturals, for example, 200316 + ... + 244621.

It is an arithmetic number, because the mean of its divisors is an integer number (2464289113).

Almost surely, 2^9856689361 is an apocalyptic number.

It is an amenable number.

9856689361 is a deficient number, since it is larger than the sum of its proper divisors (467091).

9856689361 is a wasteful number, since it uses less digits than its factorization.

9856689361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467090.

The product of its digits is 16796160, while the sum is 61.

The square root of 9856689361 is about 99280.8610004970. The cubic root of 9856689361 is about 2144.0933503649.

The spelling of 9856689361 in words is "nine billion, eight hundred fifty-six million, six hundred eighty-nine thousand, three hundred sixty-one".