84218027 has 2 divisors, whose sum is σ = 84218028. Its totient is φ = 84218026.

The previous prime is 84218023. The next prime is 84218039. The reversal of 84218027 is 72081248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84218027 - 2² = 84218023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84217984 and 84218002.

It is not a weakly prime, because it can be changed into another prime (84218021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42109013 + 42109014.

It is an arithmetic number, because the mean of its divisors is an integer number (42109014).

Almost surely, 2^84218027 is an apocalyptic number.

84218027 is a deficient number, since it is larger than the sum of its proper divisors (1).

84218027 is an equidigital number, since it uses as much as digits as its factorization.

84218027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84218027 is about 9177.0380297785. The cubic root of 84218027 is about 438.3304967199.

The spelling of 84218027 in words is "eighty-four million, two hundred eighteen thousand, twenty-seven".