43609441 has 2 divisors, whose sum is σ = 43609442. Its totient is φ = 43609440.

The previous prime is 43609393. The next prime is 43609453. The reversal of 43609441 is 14490634.

43609441 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., 23619600 + 19989841 = 4860^2 + 4471^2 .

It is a cyclic number.

It is not a de Polignac number, because 43609441 - 2²³ = 35220833 is a prime.

It is not a weakly prime, because it can be changed into another prime (43609141) 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, 21804720 + 21804721.

It is an arithmetic number, because the mean of its divisors is an integer number (21804721).

Almost surely, 2^43609441 is an apocalyptic number.

It is an amenable number.

43609441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43609441 is an equidigital number, since it uses as much as digits as its factorization.

43609441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 43609441 is about 6603.7444681029. The cubic root of 43609441 is about 351.9871750880.

The spelling of 43609441 in words is "forty-three million, six hundred nine thousand, four hundred forty-one".