43009441 has 2 divisors, whose sum is σ = 43009442. Its totient is φ = 43009440.

The previous prime is 43009423. The next prime is 43009487. The reversal of 43009441 is 14490034.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32251041 + 10758400 = 5679^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 43009441 - 2⁵ = 43009409 is a prime.

It is not a weakly prime, because it can be changed into another prime (43069441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21504720 + 21504721.

It is an arithmetic number, because the mean of its divisors is an integer number (21504721).

Almost surely, 2^43009441 is an apocalyptic number.

It is an amenable number.

43009441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43009441 is an equidigital number, since it uses as much as digits as its factorization.

43009441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 43009441 is about 6558.1583542943. The cubic root of 43009441 is about 350.3654441478.

Adding to 43009441 its reverse (14490034), we get a palindrome (57499475).

The spelling of 43009441 in words is "forty-three million, nine thousand, four hundred forty-one".