860858867 has 4 divisors (see below), whose sum is σ = 939118776. Its totient is φ = 782598960.

The previous prime is 860858863. The next prime is 860858879. The reversal of 860858867 is 768858068.

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

It is not a de Polignac number, because 860858867 - 2² = 860858863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860858863) 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, 39129938 + ... + 39129959.

It is an arithmetic number, because the mean of its divisors is an integer number (234779694).

Almost surely, 2^860858867 is an apocalyptic number.

860858867 is a deficient number, since it is larger than the sum of its proper divisors (78259909).

860858867 is a wasteful number, since it uses less digits than its factorization.

860858867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78259908.

The product of its (nonzero) digits is 5160960, while the sum is 56.

The square root of 860858867 is about 29340.3965037966. The cubic root of 860858867 is about 951.2850078778.

The spelling of 860858867 in words is "eight hundred sixty million, eight hundred fifty-eight thousand, eight hundred sixty-seven".