8043219855 has 96 divisors (see below), whose sum is σ = 15767212032. Its totient is φ = 3757708800.

The previous prime is 8043219817. The next prime is 8043219869. The reversal of 8043219855 is 5589123408.

8043219855 is a `hidden beast` number, since 80 + 432 + 1 + 98 + 55 = 666.

It is a Cunningham number, because it is equal to 89684²-1.

It is not a de Polignac number, because 8043219855 - 2¹⁰ = 8043218831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8043219855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4034739 + ... + 4036731.

It is an arithmetic number, because the mean of its divisors is an integer number (164241792).

Almost surely, 2^8043219855 is an apocalyptic number.

8043219855 is a deficient number, since it is larger than the sum of its proper divisors (7723992177).

8043219855 is a wasteful number, since it uses less digits than its factorization.

8043219855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309 (or 2306 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 8043219855 is about 89683.9999944249. Note that the first 5 decimals coincide. The cubic root of 8043219855 is about 2003.5951880224.

The spelling of 8043219855 in words is "eight billion, forty-three million, two hundred nineteen thousand, eight hundred fifty-five".