8601394689 has 12 divisors (see below), whose sum is σ = 12425370516. Its totient is φ = 5733739872.

The previous prime is 8601394687. The next prime is 8601394717. The reversal of 8601394689 is 9864931068.

It can be written as a sum of positive squares in 2 ways, for example, as 1157156289 + 7444238400 = 34017^2 + 86280^2 .

It is not a de Polignac number, because 8601394689 - 2¹ = 8601394687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8601394687) 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 11 ways as a sum of consecutive naturals, for example, 78499 + ... + 152855.

It is an arithmetic number, because the mean of its divisors is an integer number (1035447543).

Almost surely, 2^8601394689 is an apocalyptic number.

It is an amenable number.

8601394689 is a deficient number, since it is larger than the sum of its proper divisors (3823975827).

8601394689 is a wasteful number, since it uses less digits than its factorization.

8601394689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87216 (or 87213 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 8601394689 is about 92743.7043092414. The cubic root of 8601394689 is about 2048.9103619537.

The spelling of 8601394689 in words is "eight billion, six hundred one million, three hundred ninety-four thousand, six hundred eighty-nine".