868476853 has 4 divisors (see below), whose sum is σ = 869922508. Its totient is φ = 867031200.

The previous prime is 868476827. The next prime is 868476887. The reversal of 868476853 is 358674868.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 346034404 + 522442449 = 18602^2 + 22857^2 .

It is a cyclic number.

It is not a de Polignac number, because 868476853 - 2⁵ = 868476821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868476794 and 868476803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868471853) 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 in 3 ways as a sum of consecutive naturals, for example, 721926 + ... + 723127.

It is an arithmetic number, because the mean of its divisors is an integer number (217480627).

Almost surely, 2^868476853 is an apocalyptic number.

It is an amenable number.

868476853 is a deficient number, since it is larger than the sum of its proper divisors (1445655).

868476853 is a wasteful number, since it uses less digits than its factorization.

868476853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445654.

The product of its digits is 7741440, while the sum is 55.

The square root of 868476853 is about 29469.9313368728. The cubic root of 868476853 is about 954.0828353606.

The spelling of 868476853 in words is "eight hundred sixty-eight million, four hundred seventy-six thousand, eight hundred fifty-three".