8669844545 has 8 divisors (see below), whose sum is σ = 10506822120. Its totient is φ = 6867203200.

The previous prime is 8669844541. The next prime is 8669844559. The reversal of 8669844545 is 5454489668.

It is a happy number.

It is a Cunningham number, because it is equal to 93112²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3121233424 + 5548611121 = 55868^2 + 74489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8669844545 - 2² = 8669844541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8669844541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8583500 + ... + 8584509.

It is an arithmetic number, because the mean of its divisors is an integer number (1313352765).

Almost surely, 2^8669844545 is an apocalyptic number.

It is an amenable number.

8669844545 is a deficient number, since it is larger than the sum of its proper divisors (1836977575).

8669844545 is a wasteful number, since it uses less digits than its factorization.

8669844545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17168115.

The product of its digits is 33177600, while the sum is 59.

The square root of 8669844545 is about 93112.0000053699. Note that the first 5 decimals coincide. The cubic root of 8669844545 is about 2054.3310807420.

The spelling of 8669844545 in words is "eight billion, six hundred sixty-nine million, eight hundred forty-four thousand, five hundred forty-five".