56043439 has 2 divisors, whose sum is σ = 56043440. Its totient is φ = 56043438.

The previous prime is 56043431. The next prime is 56043511. The reversal of 56043439 is 93434065.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56043439 - 2³ = 56043431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56043431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28021719 + 28021720.

It is an arithmetic number, because the mean of its divisors is an integer number (28021720).

Almost surely, 2^56043439 is an apocalyptic number.

56043439 is a deficient number, since it is larger than the sum of its proper divisors (1).

56043439 is an equidigital number, since it uses as much as digits as its factorization.

56043439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 56043439 is about 7486.2166011945. The cubic root of 56043439 is about 382.6851345797.

The spelling of 56043439 in words is "fifty-six million, forty-three thousand, four hundred thirty-nine".