800889029 has 4 divisors (see below), whose sum is σ = 800950284. Its totient is φ = 800827776.

The previous prime is 800888987. The next prime is 800889041. The reversal of 800889029 is 920988008.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 653824900 + 147064129 = 25570^2 + 12127^2 .

It is a cyclic number.

It is not a de Polignac number, because 800889029 - 2²⁰ = 799840453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800880029) 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 in 3 ways as a sum of consecutive naturals, for example, 2252 + ... + 40085.

It is an arithmetic number, because the mean of its divisors is an integer number (200237571).

Almost surely, 2^800889029 is an apocalyptic number.

It is an amenable number.

800889029 is a deficient number, since it is larger than the sum of its proper divisors (61255).

800889029 is a wasteful number, since it uses less digits than its factorization.

800889029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61254.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 800889029 is about 28299.9828445178. The cubic root of 800889029 is about 928.6615150097.

The spelling of 800889029 in words is "eight hundred million, eight hundred eighty-nine thousand, twenty-nine".