84255289 has 2 divisors, whose sum is σ = 84255290. Its totient is φ = 84255288.

The previous prime is 84255251. The next prime is 84255337. The reversal of 84255289 is 98255248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83997225 + 258064 = 9165^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 84255289 - 2¹⁵ = 84222521 is a prime.

It is not a weakly prime, because it can be changed into another prime (84255089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42127644 + 42127645.

It is an arithmetic number, because the mean of its divisors is an integer number (42127645).

Almost surely, 2^84255289 is an apocalyptic number.

It is an amenable number.

84255289 is a deficient number, since it is larger than the sum of its proper divisors (1).

84255289 is an equidigital number, since it uses as much as digits as its factorization.

84255289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 43.

The square root of 84255289 is about 9179.0679810098. The cubic root of 84255289 is about 438.3951331693.

The spelling of 84255289 in words is "eighty-four million, two hundred fifty-five thousand, two hundred eighty-nine".