556738439 has 2 divisors, whose sum is σ = 556738440. Its totient is φ = 556738438.

The previous prime is 556738379. The next prime is 556738531. The reversal of 556738439 is 934837655.

556738439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556738439 - 2⁸ = 556738183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556738639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278369219 + 278369220.

It is an arithmetic number, because the mean of its divisors is an integer number (278369220).

Almost surely, 2^556738439 is an apocalyptic number.

556738439 is a deficient number, since it is larger than the sum of its proper divisors (1).

556738439 is an equidigital number, since it uses as much as digits as its factorization.

556738439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 50.

The square root of 556738439 is about 23595.3054440921. The cubic root of 556738439 is about 822.6537261285.

The spelling of 556738439 in words is "five hundred fifty-six million, seven hundred thirty-eight thousand, four hundred thirty-nine".