868241709 has 6 divisors (see below), whose sum is σ = 1254126926. Its totient is φ = 578827800.

The previous prime is 868241657. The next prime is 868241711. The reversal of 868241709 is 907142868.

It can be written as a sum of positive squares in only one way, i.e., 777573225 + 90668484 = 27885^2 + 9522^2 .

It is not a de Polignac number, because 868241709 - 2⁹ = 868241197 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 (868241729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48235642 + ... + 48235659.

Almost surely, 2^868241709 is an apocalyptic number.

It is an amenable number.

868241709 is a deficient number, since it is larger than the sum of its proper divisors (385885217).

868241709 is a wasteful number, since it uses less digits than its factorization.

868241709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96471307 (or 96471304 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 868241709 is about 29465.9415087996. The cubic root of 868241709 is about 953.9967201870.

The spelling of 868241709 in words is "eight hundred sixty-eight million, two hundred forty-one thousand, seven hundred nine".