8687999169 has 24 divisors (see below), whose sum is σ = 13071036160. Its totient is φ = 5766669936.

The previous prime is 8687999161. The next prime is 8687999183. The reversal of 8687999169 is 9619997868.

It is not a de Polignac number, because 8687999169 - 2³ = 8687999161 is a prime.

It is a super-2 number, since 2×8687999169² (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 = 8687999097 and 8687999106.

It is not an unprimeable number, because it can be changed into a prime (8687999161) 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 23 ways as a sum of consecutive naturals, for example, 22417 + ... + 133710.

Almost surely, 2^8687999169 is an apocalyptic number.

It is an amenable number.

8687999169 is a deficient number, since it is larger than the sum of its proper divisors (4383036991).

8687999169 is a wasteful number, since it uses less digits than its factorization.

8687999169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156371 (or 156359 counting only the distinct ones).

The product of its digits is 105815808, while the sum is 72.

The square root of 8687999169 is about 93209.4371241453. The cubic root of 8687999169 is about 2055.7640017169.

The spelling of 8687999169 in words is "eight billion, six hundred eighty-seven million, nine hundred ninety-nine thousand, one hundred sixty-nine".