84579017 has 2 divisors, whose sum is σ = 84579018. Its totient is φ = 84579016.

The previous prime is 84579007. The next prime is 84579049. The reversal of 84579017 is 71097548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79995136 + 4583881 = 8944^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 84579017 - 2¹⁰ = 84577993 is a prime.

It is a super-2 number, since 2×84579017² = 14307220233372578, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84579007) 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, 42289508 + 42289509.

It is an arithmetic number, because the mean of its divisors is an integer number (42289509).

Almost surely, 2^84579017 is an apocalyptic number.

It is an amenable number.

84579017 is a deficient number, since it is larger than the sum of its proper divisors (1).

84579017 is an equidigital number, since it uses as much as digits as its factorization.

84579017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 84579017 is about 9196.6851093206. The cubic root of 84579017 is about 438.9558868991.

The spelling of 84579017 in words is "eighty-four million, five hundred seventy-nine thousand, seventeen".