864410609 has 2 divisors, whose sum is σ = 864410610. Its totient is φ = 864410608.

The previous prime is 864410579. The next prime is 864410623. The reversal of 864410609 is 906014468.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 735928384 + 128482225 = 27128^2 + 11335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-864410609 is a prime.

It is not a weakly prime, because it can be changed into another prime (864410629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432205304 + 432205305.

It is an arithmetic number, because the mean of its divisors is an integer number (432205305).

Almost surely, 2^864410609 is an apocalyptic number.

It is an amenable number.

864410609 is a deficient number, since it is larger than the sum of its proper divisors (1).

864410609 is an equidigital number, since it uses as much as digits as its factorization.

864410609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 864410609 is about 29400.8606846806. The cubic root of 864410609 is about 952.5914871836.

The spelling of 864410609 in words is "eight hundred sixty-four million, four hundred ten thousand, six hundred nine".