868972273 has 4 divisors (see below), whose sum is σ = 935816308. Its totient is φ = 802128240.

The previous prime is 868972243. The next prime is 868972297. The reversal of 868972273 is 372279868.

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 101848464 + 767123809 = 10092^2 + 27697^2 .

It is a cyclic number.

It is not a de Polignac number, because 868972273 - 2⁵ = 868972241 is a prime.

It is a super-2 number, since 2×868972273² = 1510225622485573058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 868972273.

It is not an unprimeable number, because it can be changed into a prime (868972243) 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, 33421998 + ... + 33422023.

It is an arithmetic number, because the mean of its divisors is an integer number (233954077).

Almost surely, 2^868972273 is an apocalyptic number.

It is an amenable number.

868972273 is a deficient number, since it is larger than the sum of its proper divisors (66844035).

868972273 is a wasteful number, since it uses less digits than its factorization.

868972273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66844034.

The product of its digits is 2032128, while the sum is 52.

The square root of 868972273 is about 29478.3356551892. The cubic root of 868972273 is about 954.2642187666.

The spelling of 868972273 in words is "eight hundred sixty-eight million, nine hundred seventy-two thousand, two hundred seventy-three".