8505392219 has 4 divisors (see below), whose sum is σ = 8531088600. Its totient is φ = 8479695840.

The previous prime is 8505392197. The next prime is 8505392239. The reversal of 8505392219 is 9122935058.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8505392219 is a prime.

It is a super-2 number, since 2×8505392219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8505392219.

It is not an unprimeable number, because it can be changed into a prime (8505392239) 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, 12847694 + ... + 12848355.

It is an arithmetic number, because the mean of its divisors is an integer number (2132772150).

Almost surely, 2^8505392219 is an apocalyptic number.

8505392219 is a deficient number, since it is larger than the sum of its proper divisors (25696381).

8505392219 is a wasteful number, since it uses less digits than its factorization.

8505392219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25696380.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 8505392219 is about 92224.6833499579. The cubic root of 8505392219 is about 2041.2590122485.

The spelling of 8505392219 in words is "eight billion, five hundred five million, three hundred ninety-two thousand, two hundred nineteen".