856284895 has 8 divisors (see below), whose sum is σ = 1055313504. Its totient is φ = 666513504.

The previous prime is 856284893. The next prime is 856284901. The reversal of 856284895 is 598482658.

It is a happy number.

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 856284895 - 2¹ = 856284893 is a prime.

It is a super-2 number, since 2×856284895² = 1466447642810322050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856284893) 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 7 ways as a sum of consecutive naturals, for example, 2314099 + ... + 2314468.

It is an arithmetic number, because the mean of its divisors is an integer number (131914188).

Almost surely, 2^856284895 is an apocalyptic number.

856284895 is a deficient number, since it is larger than the sum of its proper divisors (199028609).

856284895 is a wasteful number, since it uses less digits than its factorization.

856284895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628609.

The product of its digits is 5529600, while the sum is 55.

The square root of 856284895 is about 29262.3460269337. The cubic root of 856284895 is about 949.5972050492.

The spelling of 856284895 in words is "eight hundred fifty-six million, two hundred eighty-four thousand, eight hundred ninety-five".