800928169 has 2 divisors, whose sum is σ = 800928170. Its totient is φ = 800928168.

The previous prime is 800928133. The next prime is 800928173. The reversal of 800928169 is 961829008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 675376144 + 125552025 = 25988^2 + 11205^2 .

It is a cyclic number.

It is not a de Polignac number, because 800928169 - 2⁹ = 800927657 is a prime.

It is a super-2 number, since 2×800928169² = 1282971863795385122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (800928179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400464084 + 400464085.

It is an arithmetic number, because the mean of its divisors is an integer number (400464085).

Almost surely, 2^800928169 is an apocalyptic number.

It is an amenable number.

800928169 is a deficient number, since it is larger than the sum of its proper divisors (1).

800928169 is an equidigital number, since it uses as much as digits as its factorization.

800928169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 800928169 is about 28300.6743559230. The cubic root of 800928169 is about 928.6766428731.

The spelling of 800928169 in words is "eight hundred million, nine hundred twenty-eight thousand, one hundred sixty-nine".