43331089 has 2 divisors, whose sum is σ = 43331090. Its totient is φ = 43331088.

The previous prime is 43331083. The next prime is 43331129. The reversal of 43331089 is 98013334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42315025 + 1016064 = 6505^2 + 1008^2 .

It is a cyclic number.

It is not a de Polignac number, because 43331089 - 2⁷ = 43330961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43331089.

It is not a weakly prime, because it can be changed into another prime (43331083) 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 as a sum of consecutive naturals, namely, 21665544 + 21665545.

It is an arithmetic number, because the mean of its divisors is an integer number (21665545).

Almost surely, 2^43331089 is an apocalyptic number.

It is an amenable number.

43331089 is a deficient number, since it is larger than the sum of its proper divisors (1).

43331089 is an equidigital number, since it uses as much as digits as its factorization.

43331089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 43331089 is about 6582.6354144826. The cubic root of 43331089 is about 351.2366836810.

The spelling of 43331089 in words is "forty-three million, three hundred thirty-one thousand, eighty-nine".