868223953 has 4 divisors (see below), whose sum is σ = 898162740. Its totient is φ = 838285168.

The previous prime is 868223921. The next prime is 868223957. The reversal of 868223953 is 359322868.

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 684973584 + 183250369 = 26172^2 + 13537^2 .

It is a cyclic number.

It is not a de Polignac number, because 868223953 - 2⁵ = 868223921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868223957) 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 3 ways as a sum of consecutive naturals, for example, 14969350 + ... + 14969407.

It is an arithmetic number, because the mean of its divisors is an integer number (224540685).

Almost surely, 2^868223953 is an apocalyptic number.

It is an amenable number.

868223953 is a deficient number, since it is larger than the sum of its proper divisors (29938787).

868223953 is a wasteful number, since it uses less digits than its factorization.

868223953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29938786.

The product of its digits is 622080, while the sum is 46.

The square root of 868223953 is about 29465.6402102517. The cubic root of 868223953 is about 953.9902168977.

The spelling of 868223953 in words is "eight hundred sixty-eight million, two hundred twenty-three thousand, nine hundred fifty-three".