8644996129 has 12 divisors (see below), whose sum is σ = 10859830912. Its totient is φ = 6736359960.

The previous prime is 8644996093. The next prime is 8644996141. The reversal of 8644996129 is 9216994468.

It is not a de Polignac number, because 8644996129 - 2¹³ = 8644987937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8644996169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5102457 + ... + 5104150.

Almost surely, 2^8644996129 is an apocalyptic number.

It is an amenable number.

8644996129 is a deficient number, since it is larger than the sum of its proper divisors (2214834783).

8644996129 is a wasteful number, since it uses less digits than its factorization.

8644996129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206636 (or 10206625 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 58.

The square root of 8644996129 is about 92978.4713199782. The cubic root of 8644996129 is about 2052.3665811146.

The spelling of 8644996129 in words is "eight billion, six hundred forty-four million, nine hundred ninety-six thousand, one hundred twenty-nine".