856946315 has 8 divisors (see below), whose sum is σ = 1028936688. Its totient is φ = 685156320.

The previous prime is 856946309. The next prime is 856946323. The reversal of 856946315 is 513649658.

It is a happy number.

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

It is not a de Polignac number, because 856946315 - 2¹⁰ = 856945291 is a prime.

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 856946315.

It is an unprimeable number.

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, 40517 + ... + 57926.

It is an arithmetic number, because the mean of its divisors is an integer number (128617086).

Almost surely, 2^856946315 is an apocalyptic number.

856946315 is a deficient number, since it is larger than the sum of its proper divisors (171990373).

856946315 is a wasteful number, since it uses less digits than its factorization.

856946315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100189.

The product of its digits is 777600, while the sum is 47.

The square root of 856946315 is about 29273.6453999156. The cubic root of 856946315 is about 949.8416411941.

The spelling of 856946315 in words is "eight hundred fifty-six million, nine hundred forty-six thousand, three hundred fifteen".