9689449869 has 48 divisors (see below), whose sum is σ = 16304371200. Its totient is φ = 5486947200.

The previous prime is 9689449859. The next prime is 9689449871.

It is a happy number.

9689449869 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9689449869 - 2⁸ = 9689449613 is a prime.

It is a super-2 number, since 2×9689449869² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9689449797 and 9689449806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9689449859) 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 47 ways as a sum of consecutive naturals, for example, 34567 + ... + 143435.

It is an arithmetic number, because the mean of its divisors is an integer number (339674400).

Almost surely, 2^9689449869 is an apocalyptic number.

9689449869 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9689449869 is a deficient number, since it is larger than the sum of its proper divisors (6614921331).

9689449869 is a wasteful number, since it uses less digits than its factorization.

9689449869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108946 (or 108943 counting only the distinct ones).

The product of its digits is 241864704, while the sum is 72.

The square root of 9689449869 is about 98435.0032711941. The cubic root of 9689449869 is about 2131.8977604835.

The spelling of 9689449869 in words is "nine billion, six hundred eighty-nine million, four hundred forty-nine thousand, eight hundred sixty-nine".