8555442219 has 12 divisors (see below), whose sum is σ = 13084794216. Its totient is φ = 5368120512.

The previous prime is 8555442209. The next prime is 8555442257. The reversal of 8555442219 is 9122445558.

8555442219 is a `hidden beast` number, since 85 + 5 + 544 + 2 + 21 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-8555442219 is a prime.

It is a super-2 number, since 2×8555442219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8555442209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27958809 + ... + 27959114.

It is an arithmetic number, because the mean of its divisors is an integer number (1090399518).

Almost surely, 2^8555442219 is an apocalyptic number.

8555442219 is a deficient number, since it is larger than the sum of its proper divisors (4529351997).

8555442219 is a wasteful number, since it uses less digits than its factorization.

8555442219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55917946 (or 55917943 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 8555442219 is about 92495.6335131556. The cubic root of 8555442219 is about 2045.2551152209.

The spelling of 8555442219 in words is "eight billion, five hundred fifty-five million, four hundred forty-two thousand, two hundred nineteen".