84087297089 has 4 divisors (see below), whose sum is σ = 84111624324. Its totient is φ = 84062969856.

The previous prime is 84087297079. The next prime is 84087297113. The reversal of 84087297089 is 98079278048.

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 2615299600 + 81471997489 = 51140^2 + 285433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84087297089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84087297079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12158432 + ... + 12165345.

It is an arithmetic number, because the mean of its divisors is an integer number (21027906081).

Almost surely, 2^84087297089 is an apocalyptic number.

It is an amenable number.

84087297089 is a deficient number, since it is larger than the sum of its proper divisors (24327235).

84087297089 is a wasteful number, since it uses less digits than its factorization.

84087297089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24327234.

The product of its (nonzero) digits is 16257024, while the sum is 62.

The spelling of 84087297089 in words is "eighty-four billion, eighty-seven million, two hundred ninety-seven thousand, eighty-nine".