43424819 has 2 divisors, whose sum is σ = 43424820. Its totient is φ = 43424818.

The previous prime is 43424779. The next prime is 43424833. The reversal of 43424819 is 91842434.

43424819 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 is a cyclic number.

It is not a de Polignac number, because 43424819 - 2¹² = 43420723 is a prime.

It is a super-2 number, since 2×43424819² = 3771429810365522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43424839) 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, 21712409 + 21712410.

It is an arithmetic number, because the mean of its divisors is an integer number (21712410).

Almost surely, 2^43424819 is an apocalyptic number.

43424819 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424819 is an equidigital number, since it uses as much as digits as its factorization.

43424819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 35.

The square root of 43424819 is about 6589.7510575135. The cubic root of 43424819 is about 351.4897560596.

The spelling of 43424819 in words is "forty-three million, four hundred twenty-four thousand, eight hundred nineteen".