43424869 has 2 divisors, whose sum is σ = 43424870. Its totient is φ = 43424868.

The previous prime is 43424839. The next prime is 43424881. The reversal of 43424869 is 96842434.

43424869 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., 38750625 + 4674244 = 6225^2 + 2162^2 .

It is a cyclic number.

It is not a de Polignac number, because 43424869 - 2⁹ = 43424357 is a prime.

It is a super-3 number, since 3×43424869³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43424819) 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, 21712434 + 21712435.

It is an arithmetic number, because the mean of its divisors is an integer number (21712435).

Almost surely, 2^43424869 is an apocalyptic number.

It is an amenable number.

43424869 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424869 is an equidigital number, since it uses as much as digits as its factorization.

43424869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The square root of 43424869 is about 6589.7548512824. The cubic root of 43424869 is about 351.4898909631.

The spelling of 43424869 in words is "forty-three million, four hundred twenty-four thousand, eight hundred sixty-nine".