84389065 has 4 divisors (see below), whose sum is σ = 101266884. Its totient is φ = 67511248.

The previous prime is 84389009. The next prime is 84389083. The reversal of 84389065 is 56098348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43837641 + 40551424 = 6621^2 + 6368^2 .

It is a cyclic number.

It is not a de Polignac number, because 84389065 - 2⁹ = 84388553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8438902 + ... + 8438911.

It is an arithmetic number, because the mean of its divisors is an integer number (25316721).

Almost surely, 2^84389065 is an apocalyptic number.

It is an amenable number.

84389065 is a deficient number, since it is larger than the sum of its proper divisors (16877819).

84389065 is a wasteful number, since it uses less digits than its factorization.

84389065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16877818.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 84389065 is about 9186.3521051612. The cubic root of 84389065 is about 438.6270305242.

The spelling of 84389065 in words is "eighty-four million, three hundred eighty-nine thousand, sixty-five".