84316777 has 2 divisors, whose sum is σ = 84316778. Its totient is φ = 84316776.

The previous prime is 84316769. The next prime is 84316783. The reversal of 84316777 is 77761348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70744921 + 13571856 = 8411^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 84316777 - 2³ = 84316769 is a prime.

It is not a weakly prime, because it can be changed into another prime (84316877) 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, 42158388 + 42158389.

It is an arithmetic number, because the mean of its divisors is an integer number (42158389).

Almost surely, 2^84316777 is an apocalyptic number.

It is an amenable number.

84316777 is a deficient number, since it is larger than the sum of its proper divisors (1).

84316777 is an equidigital number, since it uses as much as digits as its factorization.

84316777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 84316777 is about 9182.4167298157. The cubic root of 84316777 is about 438.5017515414.

The spelling of 84316777 in words is "eighty-four million, three hundred sixteen thousand, seven hundred seventy-seven".