855393847 has 8 divisors (see below), whose sum is σ = 1066465152. Its totient is φ = 666540600.

The previous prime is 855393839. The next prime is 855393853. The reversal of 855393847 is 748393558.

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

It is not a de Polignac number, because 855393847 - 2³ = 855393839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855393794 and 855393803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855393827) 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, 5554429 + ... + 5554582.

It is an arithmetic number, because the mean of its divisors is an integer number (133308144).

Almost surely, 2^855393847 is an apocalyptic number.

855393847 is a deficient number, since it is larger than the sum of its proper divisors (211071305).

855393847 is a wasteful number, since it uses less digits than its factorization.

855393847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11109029.

The product of its digits is 3628800, while the sum is 52.

The square root of 855393847 is about 29247.1169006451. The cubic root of 855393847 is about 949.2677078763.

It can be divided in two parts, 8553 and 93847, that added together give a square (102400 = 320²).

The spelling of 855393847 in words is "eight hundred fifty-five million, three hundred ninety-three thousand, eight hundred forty-seven".