84500709 has 16 divisors (see below), whose sum is σ = 115473600. Its totient is φ = 54943616.

The previous prime is 84500683. The next prime is 84500729. The reversal of 84500709 is 90700548.

It is not a de Polignac number, because 84500709 - 2⁹ = 84500197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84500709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84500729) 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 in 15 ways as a sum of consecutive naturals, for example, 26977 + ... + 29945.

It is an arithmetic number, because the mean of its divisors is an integer number (7217100).

Almost surely, 2^84500709 is an apocalyptic number.

It is an amenable number.

84500709 is a deficient number, since it is larger than the sum of its proper divisors (30972891).

84500709 is a wasteful number, since it uses less digits than its factorization.

84500709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 84500709 is about 9192.4267198602. The cubic root of 84500709 is about 438.8203750718.

The spelling of 84500709 in words is "eighty-four million, five hundred thousand, seven hundred nine".