8611969849 has 32 divisors (see below), whose sum is σ = 10722713600. Its totient is φ = 6749723520.

The previous prime is 8611969829. The next prime is 8611969897. The reversal of 8611969849 is 9489691168.

It is a cyclic number.

It is not a de Polignac number, because 8611969849 - 2¹¹ = 8611967801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8611969819) 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 31 ways as a sum of consecutive naturals, for example, 1683754 + ... + 1688860.

It is an arithmetic number, because the mean of its divisors is an integer number (335084800).

Almost surely, 2^8611969849 is an apocalyptic number.

It is an amenable number.

8611969849 is a deficient number, since it is larger than the sum of its proper divisors (2110743751).

8611969849 is a wasteful number, since it uses less digits than its factorization.

8611969849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573.

The product of its digits is 6718464, while the sum is 61.

The square root of 8611969849 is about 92800.6996148197. The cubic root of 8611969849 is about 2049.7497095972.

The spelling of 8611969849 in words is "eight billion, six hundred eleven million, nine hundred sixty-nine thousand, eight hundred forty-nine".