43840089089 has 2 divisors, whose sum is σ = 43840089090. Its totient is φ = 43840089088.

The previous prime is 43840089077. The next prime is 43840089157. The reversal of 43840089089 is 98098004834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30382233025 + 13457856064 = 174305^2 + 116008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43840089089 is a prime.

It is a super-3 number, since 3×43840089089³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 43840089089.

It is not a weakly prime, because it can be changed into another prime (43440089089) 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 as a sum of consecutive naturals, namely, 21920044544 + 21920044545.

It is an arithmetic number, because the mean of its divisors is an integer number (21920044545).

Almost surely, 2^43840089089 is an apocalyptic number.

It is an amenable number.

43840089089 is a deficient number, since it is larger than the sum of its proper divisors (1).

43840089089 is an equidigital number, since it uses as much as digits as its factorization.

43840089089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 43840089089 in words is "forty-three billion, eight hundred forty million, eighty-nine thousand, eighty-nine".