84228377 has 2 divisors, whose sum is σ = 84228378. Its totient is φ = 84228376.

The previous prime is 84228343. The next prime is 84228379. The reversal of 84228377 is 77382248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83704201 + 524176 = 9149^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 84228377 - 2¹² = 84224281 is a prime.

Together with 84228379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84228379) 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, 42114188 + 42114189.

It is an arithmetic number, because the mean of its divisors is an integer number (42114189).

Almost surely, 2^84228377 is an apocalyptic number.

It is an amenable number.

84228377 is a deficient number, since it is larger than the sum of its proper divisors (1).

84228377 is an equidigital number, since it uses as much as digits as its factorization.

84228377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 41.

The square root of 84228377 is about 9177.6019198917. The cubic root of 84228377 is about 438.3484522375.

The spelling of 84228377 in words is "eighty-four million, two hundred twenty-eight thousand, three hundred seventy-seven".