43359409 has 2 divisors, whose sum is σ = 43359410. Its totient is φ = 43359408.

The previous prime is 43359391. The next prime is 43359413. The reversal of 43359409 is 90495334.

43359409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41563809 + 1795600 = 6447^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 43359409 - 2⁹ = 43358897 is a prime.

It is not a weakly prime, because it can be changed into another prime (43359479) 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, 21679704 + 21679705.

It is an arithmetic number, because the mean of its divisors is an integer number (21679705).

Almost surely, 2^43359409 is an apocalyptic number.

It is an amenable number.

43359409 is a deficient number, since it is larger than the sum of its proper divisors (1).

43359409 is an equidigital number, since it uses as much as digits as its factorization.

43359409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 43359409 is about 6584.7861772422. The cubic root of 43359409 is about 351.3131865405.

The spelling of 43359409 in words is "forty-three million, three hundred fifty-nine thousand, four hundred nine".