9636398069 has 4 divisors (see below), whose sum is σ = 9768403596. Its totient is φ = 9504392544.

The previous prime is 9636398033. The next prime is 9636398087. The reversal of 9636398069 is 9608936369.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9608936369 = 307 ⋅31299467.

It can be written as a sum of positive squares in 2 ways, for example, as 7011885169 + 2624512900 = 83737^2 + 51230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9636398069 is a prime.

It is a super-2 number, since 2×9636398069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9636397999 and 9636398017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9636398969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66002654 + ... + 66002799.

It is an arithmetic number, because the mean of its divisors is an integer number (2442100899).

Almost surely, 2^9636398069 is an apocalyptic number.

It is an amenable number.

9636398069 is a deficient number, since it is larger than the sum of its proper divisors (132005527).

9636398069 is a wasteful number, since it uses less digits than its factorization.

9636398069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132005526.

The product of its (nonzero) digits is 11337408, while the sum is 59.

The square root of 9636398069 is about 98165.1571027113. The cubic root of 9636398069 is about 2127.9997730610. Note that the first 3 decimals are identical.

The spelling of 9636398069 in words is "nine billion, six hundred thirty-six million, three hundred ninety-eight thousand, sixty-nine".