43439497 has 2 divisors, whose sum is σ = 43439498. Its totient is φ = 43439496.

The previous prime is 43439441. The next prime is 43439507. The reversal of 43439497 is 79493434.

43439497 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., 27206656 + 16232841 = 5216^2 + 4029^2 .

It is a cyclic number.

It is not a de Polignac number, because 43439497 - 2¹⁹ = 42915209 is a prime.

It is a super-2 number, since 2×43439497² = 3773979799226018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43439597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21719748 + 21719749.

It is an arithmetic number, because the mean of its divisors is an integer number (21719749).

Almost surely, 2^43439497 is an apocalyptic number.

It is an amenable number.

43439497 is a deficient number, since it is larger than the sum of its proper divisors (1).

43439497 is an equidigital number, since it uses as much as digits as its factorization.

43439497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 43.

The square root of 43439497 is about 6590.8646625462. The cubic root of 43439497 is about 351.5293538870.

The spelling of 43439497 in words is "forty-three million, four hundred thirty-nine thousand, four hundred ninety-seven".