8750640209 has 16 divisors (see below), whose sum is σ = 9471168000. Its totient is φ = 8057623680.

The previous prime is 8750640169. The next prime is 8750640253. The reversal of 8750640209 is 9020460578.

It is a cyclic number.

It is not a de Polignac number, because 8750640209 - 2²⁰ = 8749591633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8750040209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188672 + ... + 230430.

It is an arithmetic number, because the mean of its divisors is an integer number (591948000).

Almost surely, 2^8750640209 is an apocalyptic number.

It is an amenable number.

8750640209 is a deficient number, since it is larger than the sum of its proper divisors (720527791).

8750640209 is a wasteful number, since it uses less digits than its factorization.

8750640209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42088.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 8750640209 is about 93544.8566678040. The cubic root of 8750640209 is about 2060.6929055156.

The spelling of 8750640209 in words is "eight billion, seven hundred fifty million, six hundred forty thousand, two hundred nine".