855473847 has 8 divisors (see below), whose sum is σ = 1207727856. Its totient is φ = 536767872.

The previous prime is 855473831. The next prime is 855473867. The reversal of 855473847 is 748374558.

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

It is not a de Polignac number, because 855473847 - 2⁴ = 855473831 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 16773997 = 855473847 / (8 + 5 + 5 + 4 + 7 + 3 + 8 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 855473847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855473867) 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, 8386948 + ... + 8387049.

It is an arithmetic number, because the mean of its divisors is an integer number (150965982).

Almost surely, 2^855473847 is an apocalyptic number.

855473847 is a deficient number, since it is larger than the sum of its proper divisors (352254009).

855473847 is a wasteful number, since it uses less digits than its factorization.

855473847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16774017.

The product of its digits is 3763200, while the sum is 51.

The square root of 855473847 is about 29248.4845248433. The cubic root of 855473847 is about 949.2973001122.

The spelling of 855473847 in words is "eight hundred fifty-five million, four hundred seventy-three thousand, eight hundred forty-seven".