9689889869 has 4 divisors (see below), whose sum is σ = 10570788960. Its totient is φ = 8808990780.

The previous prime is 9689889829. The next prime is 9689889893.

9689889869 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9689889869 - 2¹² = 9689885773 is a prime.

It is a super-2 number, since 2×9689889869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9689889793 and 9689889802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9689889809) 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, 440449529 + ... + 440449550.

It is an arithmetic number, because the mean of its divisors is an integer number (2642697240).

Almost surely, 2^9689889869 is an apocalyptic number.

It is an amenable number.

9689889869 is a deficient number, since it is larger than the sum of its proper divisors (880899091).

9689889869 is a wasteful number, since it uses less digits than its factorization.

9689889869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880899090.

The product of its digits is 967458816, while the sum is 80.

The square root of 9689889869 is about 98437.2382231440. The cubic root of 9689889869 is about 2131.9300299735.

The spelling of 9689889869 in words is "nine billion, six hundred eighty-nine million, eight hundred eighty-nine thousand, eight hundred sixty-nine".