8218955 has 4 divisors (see below), whose sum is σ = 9862752. Its totient is φ = 6575160.

The previous prime is 8218913. The next prime is 8218961. The reversal of 8218955 is 5598128.

8218955 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8218955 - 2¹⁰ = 8217931 is a prime.

It is a Duffinian number.

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, 821891 + ... + 821900.

It is an arithmetic number, because the mean of its divisors is an integer number (2465688).

Almost surely, 2^8218955 is an apocalyptic number.

8218955 is a deficient number, since it is larger than the sum of its proper divisors (1643797).

8218955 is a wasteful number, since it uses less digits than its factorization.

8218955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643796.

The product of its digits is 28800, while the sum is 38.

The square root of 8218955 is about 2866.8719887710. The cubic root of 8218955 is about 201.8082273007.

The spelling of 8218955 in words is "eight million, two hundred eighteen thousand, nine hundred fifty-five".