84967609 has 2 divisors, whose sum is σ = 84967610. Its totient is φ = 84967608.

The previous prime is 84967583. The next prime is 84967643. The reversal of 84967609 is 90676948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65853225 + 19114384 = 8115^2 + 4372^2 .

It is a cyclic number.

It is not a de Polignac number, because 84967609 - 2¹¹ = 84965561 is a prime.

It is not a weakly prime, because it can be changed into another prime (84967679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42483804 + 42483805.

It is an arithmetic number, because the mean of its divisors is an integer number (42483805).

Almost surely, 2^84967609 is an apocalyptic number.

It is an amenable number.

84967609 is a deficient number, since it is larger than the sum of its proper divisors (1).

84967609 is an equidigital number, since it uses as much as digits as its factorization.

84967609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 84967609 is about 9217.7876412944. The cubic root of 84967609 is about 439.6271100377.

The spelling of 84967609 in words is "eighty-four million, nine hundred sixty-seven thousand, six hundred nine".