84227218 has 4 divisors (see below), whose sum is σ = 126340830. Its totient is φ = 42113608.

The previous prime is 84227179. The next prime is 84227261. The reversal of 84227218 is 81272248.

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

It can be written as a sum of positive squares in only one way, i.e., 66863329 + 17363889 = 8177^2 + 4167^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056803 + ... + 21056806.

Almost surely, 2^84227218 is an apocalyptic number.

84227218 is a deficient number, since it is larger than the sum of its proper divisors (42113612).

84227218 is a wasteful number, since it uses less digits than its factorization.

84227218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42113611.

The product of its digits is 14336, while the sum is 34.

The square root of 84227218 is about 9177.5387768181. The cubic root of 84227218 is about 438.3464416397.

The spelling of 84227218 in words is "eighty-four million, two hundred twenty-seven thousand, two hundred eighteen".