406381559 has 2 divisors, whose sum is σ = 406381560. Its totient is φ = 406381558.

The previous prime is 406381543. The next prime is 406381579. The reversal of 406381559 is 955183604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406381559 - 2⁴ = 406381543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406381579) 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, 203190779 + 203190780.

It is an arithmetic number, because the mean of its divisors is an integer number (203190780).

Almost surely, 2^406381559 is an apocalyptic number.

406381559 is a deficient number, since it is larger than the sum of its proper divisors (1).

406381559 is an equidigital number, since it uses as much as digits as its factorization.

406381559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 406381559 is about 20158.9076837015. The cubic root of 406381559 is about 740.7039557596.

The spelling of 406381559 in words is "four hundred six million, three hundred eighty-one thousand, five hundred fifty-nine".