859117243 has 8 divisors (see below), whose sum is σ = 904632320. Its totient is φ = 813632040.

The previous prime is 859117213. The next prime is 859117249. The reversal of 859117243 is 342711958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 859117243 - 2¹³ = 859109051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 859117196 and 859117205.

It is not an unprimeable number, because it can be changed into a prime (859117249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75046 + ... + 85732.

It is an arithmetic number, because the mean of its divisors is an integer number (113079040).

Almost surely, 2^859117243 is an apocalyptic number.

859117243 is a deficient number, since it is larger than the sum of its proper divisors (45515077).

859117243 is a wasteful number, since it uses less digits than its factorization.

859117243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937.

The product of its digits is 60480, while the sum is 40.

The square root of 859117243 is about 29310.7018510305. The cubic root of 859117243 is about 950.6430523408.

The spelling of 859117243 in words is "eight hundred fifty-nine million, one hundred seventeen thousand, two hundred forty-three".