8500439345 has 4 divisors (see below), whose sum is σ = 10200527220. Its totient is φ = 6800351472.

The previous prime is 8500439333. The next prime is 8500439359. The reversal of 8500439345 is 5439340058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2850812449 + 5649626896 = 53393^2 + 75164^2 .

It is a cyclic number.

It is not a de Polignac number, because 8500439345 - 2⁴ = 8500439329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 850043930 + ... + 850043939.

It is an arithmetic number, because the mean of its divisors is an integer number (2550131805).

Almost surely, 2^8500439345 is an apocalyptic number.

It is an amenable number.

8500439345 is a deficient number, since it is larger than the sum of its proper divisors (1700087875).

8500439345 is a wasteful number, since it uses less digits than its factorization.

8500439345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700087874.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 8500439345 is about 92197.8272249406. The cubic root of 8500439345 is about 2040.8627122109.

The spelling of 8500439345 in words is "eight billion, five hundred million, four hundred thirty-nine thousand, three hundred forty-five".