8616109329 has 9 divisors (see below), whose sum is σ = 12445893499. Its totient is φ = 5743887240.

The previous prime is 8616109319. The next prime is 8616109361. The reversal of 8616109329 is 9239016168.

It is a happy number.

The square root of 8616109329 is 92823.

It is a perfect power (a square), and thus also a powerful number.

8616109329 is a `hidden beast` number, since 8 + 6 + 1 + 610 + 9 + 3 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2447577729 + 6168531600 = 49473^2 + 78540^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8616109329 - 2⁹ = 8616108817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8616109319) 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 8 ways as a sum of consecutive naturals, for example, 262999 + ... + 293939.

Almost surely, 2^8616109329 is an apocalyptic number.

8616109329 is the 92823-rd square number.

8616109329 is the 46412-nd centered octagonal number.

It is an amenable number.

8616109329 is a deficient number, since it is larger than the sum of its proper divisors (3829784170).

8616109329 is an frugal number, since it uses more digits than its factorization.

8616109329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61888 (or 30944 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The cubic root of 8616109329 is about 2050.0780719027.

The spelling of 8616109329 in words is "eight billion, six hundred sixteen million, one hundred nine thousand, three hundred twenty-nine".