438242159 has 2 divisors, whose sum is σ = 438242160. Its totient is φ = 438242158.

The previous prime is 438242083. The next prime is 438242173. The reversal of 438242159 is 951242834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438242159 - 2²⁰ = 437193583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438242179) 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, 219121079 + 219121080.

It is an arithmetic number, because the mean of its divisors is an integer number (219121080).

Almost surely, 2^438242159 is an apocalyptic number.

438242159 is a deficient number, since it is larger than the sum of its proper divisors (1).

438242159 is an equidigital number, since it uses as much as digits as its factorization.

438242159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 438242159 is about 20934.2341393231. The cubic root of 438242159 is about 759.5762636752.

The spelling of 438242159 in words is "four hundred thirty-eight million, two hundred forty-two thousand, one hundred fifty-nine".