856153847 has 8 divisors (see below), whose sum is σ = 908783712. Its totient is φ = 803776000.

The previous prime is 856153829. The next prime is 856153967. The reversal of 856153847 is 748351658.

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 856153847 - 2¹⁴ = 856137463 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 (856153807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55979 + ... + 69612.

It is an arithmetic number, because the mean of its divisors is an integer number (113597964).

Almost surely, 2^856153847 is an apocalyptic number.

856153847 is a deficient number, since it is larger than the sum of its proper divisors (52629865).

856153847 is a wasteful number, since it uses less digits than its factorization.

856153847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126009.

The product of its digits is 806400, while the sum is 47.

The square root of 856153847 is about 29260.1067496344. The cubic root of 856153847 is about 949.5487596606.

The spelling of 856153847 in words is "eight hundred fifty-six million, one hundred fifty-three thousand, eight hundred forty-seven".