800159389 has 2 divisors, whose sum is σ = 800159390. Its totient is φ = 800159388.

The previous prime is 800159317. The next prime is 800159411. The reversal of 800159389 is 983951008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 780755364 + 19404025 = 27942^2 + 4405^2 .

It is a cyclic number.

It is not a de Polignac number, because 800159389 - 2¹¹ = 800157341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800154389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400079694 + 400079695.

It is an arithmetic number, because the mean of its divisors is an integer number (400079695).

Almost surely, 2^800159389 is an apocalyptic number.

It is an amenable number.

800159389 is a deficient number, since it is larger than the sum of its proper divisors (1).

800159389 is an equidigital number, since it uses as much as digits as its factorization.

800159389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 800159389 is about 28287.0887332012. The cubic root of 800159389 is about 928.3794141455.

The spelling of 800159389 in words is "eight hundred million, one hundred fifty-nine thousand, three hundred eighty-nine".