859868887247 has 4 divisors (see below), whose sum is σ = 862304776800. Its totient is φ = 857432997696.

The previous prime is 859868887223. The next prime is 859868887259. The reversal of 859868887247 is 742788868958.

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

It is a cyclic number.

It is not a de Polignac number, because 859868887247 - 2¹² = 859868883151 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 (859808887247) 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, 1217944247 + ... + 1217944952.

It is an arithmetic number, because the mean of its divisors is an integer number (215576194200).

Almost surely, 2^859868887247 is an apocalyptic number.

859868887247 is a deficient number, since it is larger than the sum of its proper divisors (2435889553).

859868887247 is a wasteful number, since it uses less digits than its factorization.

859868887247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435889552.

The product of its digits is 3468165120, while the sum is 80.

The spelling of 859868887247 in words is "eight hundred fifty-nine billion, eight hundred sixty-eight million, eight hundred eighty-seven thousand, two hundred forty-seven".