864048109 has 2 divisors, whose sum is σ = 864048110. Its totient is φ = 864048108.

The previous prime is 864048079. The next prime is 864048121. The reversal of 864048109 is 901840468.

864048109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599172484 + 264875625 = 24478^2 + 16275^2 .

It is a cyclic number.

It is not a de Polignac number, because 864048109 - 2⁵ = 864048077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (864048139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432024054 + 432024055.

It is an arithmetic number, because the mean of its divisors is an integer number (432024055).

Almost surely, 2^864048109 is an apocalyptic number.

It is an amenable number.

864048109 is a deficient number, since it is larger than the sum of its proper divisors (1).

864048109 is an equidigital number, since it uses as much as digits as its factorization.

864048109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 864048109 is about 29394.6952527152. The cubic root of 864048109 is about 952.4583086948.

The spelling of 864048109 in words is "eight hundred sixty-four million, forty-eight thousand, one hundred nine".