868254879 has 4 divisors (see below), whose sum is σ = 1157673176. Its totient is φ = 578836584.

The previous prime is 868254847. The next prime is 868254911. The reversal of 868254879 is 978452868.

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

It is an interprime number because it is at equal distance from previous prime (868254847) and next prime (868254911).

It is not a de Polignac number, because 868254879 - 2⁵ = 868254847 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 (868254979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144709144 + ... + 144709149.

It is an arithmetic number, because the mean of its divisors is an integer number (289418294).

Almost surely, 2^868254879 is an apocalyptic number.

868254879 is a deficient number, since it is larger than the sum of its proper divisors (289418297).

868254879 is a wasteful number, since it uses less digits than its factorization.

868254879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289418296.

The product of its digits is 7741440, while the sum is 57.

The square root of 868254879 is about 29466.1649863025. The cubic root of 868254879 is about 954.0015437568.

The spelling of 868254879 in words is "eight hundred sixty-eight million, two hundred fifty-four thousand, eight hundred seventy-nine".