84089647 has 16 divisors (see below), whose sum is σ = 89812800. Its totient is φ = 78588160.

The previous prime is 84089569. The next prime is 84089683. The reversal of 84089647 is 74698048.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 84089647 - 2⁷ = 84089519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84089597 and 84089606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84089147) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 234054 + ... + 234412.

It is an arithmetic number, because the mean of its divisors is an integer number (5613300).

Almost surely, 2^84089647 is an apocalyptic number.

84089647 is a deficient number, since it is larger than the sum of its proper divisors (5723153).

84089647 is a wasteful number, since it uses less digits than its factorization.

84089647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 84089647 is about 9170.0407305529. The cubic root of 84089647 is about 438.1076565153.

The spelling of 84089647 in words is "eighty-four million, eighty-nine thousand, six hundred forty-seven".