9867655229 has 4 divisors (see below), whose sum is σ = 10185966720. Its totient is φ = 9549343740.

The previous prime is 9867655211. The next prime is 9867655243. The reversal of 9867655229 is 9225567689.

9867655229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9225567689 = 13 ⋅709659053.

It is a cyclic number.

It is not a de Polignac number, because 9867655229 - 2²⁴ = 9850878013 is a prime.

It is a super-2 number, since 2×9867655229² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9867655129) 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, 159155699 + ... + 159155760.

It is an arithmetic number, because the mean of its divisors is an integer number (2546491680).

Almost surely, 2^9867655229 is an apocalyptic number.

It is an amenable number.

9867655229 is a deficient number, since it is larger than the sum of its proper divisors (318311491).

9867655229 is a wasteful number, since it uses less digits than its factorization.

9867655229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318311490.

The product of its digits is 16329600, while the sum is 59.

The square root of 9867655229 is about 99336.0721440102. The cubic root of 9867655229 is about 2144.8881787963. Note that the first 3 decimals are identical.

The spelling of 9867655229 in words is "nine billion, eight hundred sixty-seven million, six hundred fifty-five thousand, two hundred twenty-nine".