854800109 has 2 divisors, whose sum is σ = 854800110. Its totient is φ = 854800108.

The previous prime is 854800087. The next prime is 854800189. The reversal of 854800109 is 901008458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819218884 + 35581225 = 28622^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 854800109 - 2²⁴ = 838022893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (854800189) 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, 427400054 + 427400055.

It is an arithmetic number, because the mean of its divisors is an integer number (427400055).

Almost surely, 2^854800109 is an apocalyptic number.

It is an amenable number.

854800109 is a deficient number, since it is larger than the sum of its proper divisors (1).

854800109 is an equidigital number, since it uses as much as digits as its factorization.

854800109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 854800109 is about 29236.9647706461. The cubic root of 854800109 is about 949.0480247574.

The spelling of 854800109 in words is "eight hundred fifty-four million, eight hundred thousand, one hundred nine".