8500868447 has 4 divisors (see below), whose sum is σ = 8510719680. Its totient is φ = 8491017216.

The previous prime is 8500868423. The next prime is 8500868449. The reversal of 8500868447 is 7448680058.

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

It is a cyclic number.

It is not a de Polignac number, because 8500868447 - 2⁸ = 8500868191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8500868395 and 8500868404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8500868449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4924322 + ... + 4926047.

It is an arithmetic number, because the mean of its divisors is an integer number (2127679920).

Almost surely, 2^8500868447 is an apocalyptic number.

8500868447 is a deficient number, since it is larger than the sum of its proper divisors (9851233).

8500868447 is an equidigital number, since it uses as much as digits as its factorization.

8500868447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851232.

The product of its (nonzero) digits is 1720320, while the sum is 50.

The square root of 8500868447 is about 92200.1542677668. The cubic root of 8500868447 is about 2040.8970525354.

The spelling of 8500868447 in words is "eight billion, five hundred million, eight hundred sixty-eight thousand, four hundred forty-seven".