84138227 has 2 divisors, whose sum is σ = 84138228. Its totient is φ = 84138226.

The previous prime is 84138217. The next prime is 84138281. The reversal of 84138227 is 72283148.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84138227 - 2⁴ = 84138211 is a prime.

It is not a weakly prime, because it can be changed into another prime (84138217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42069113 + 42069114.

It is an arithmetic number, because the mean of its divisors is an integer number (42069114).

Almost surely, 2^84138227 is an apocalyptic number.

84138227 is a deficient number, since it is larger than the sum of its proper divisors (1).

84138227 is an equidigital number, since it uses as much as digits as its factorization.

84138227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 84138227 is about 9172.6891912895. The cubic root of 84138227 is about 438.1920076551.

The spelling of 84138227 in words is "eighty-four million, one hundred thirty-eight thousand, two hundred twenty-seven".