424043549 has 2 divisors, whose sum is σ = 424043550. Its totient is φ = 424043548.

The previous prime is 424043537. The next prime is 424043567. The reversal of 424043549 is 945340424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329604025 + 94439524 = 18155^2 + 9718^2 .

It is a cyclic number.

It is not a de Polignac number, because 424043549 - 2⁸ = 424043293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424043509) 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, 212021774 + 212021775.

It is an arithmetic number, because the mean of its divisors is an integer number (212021775).

Almost surely, 2^424043549 is an apocalyptic number.

It is an amenable number.

424043549 is a deficient number, since it is larger than the sum of its proper divisors (1).

424043549 is an equidigital number, since it uses as much as digits as its factorization.

424043549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 424043549 is about 20592.3177180229. The cubic root of 424043549 is about 751.2828704807.

The spelling of 424043549 in words is "four hundred twenty-four million, forty-three thousand, five hundred forty-nine".