855906843 has 32 divisors (see below), whose sum is σ = 1318551552. Its totient is φ = 488743200.

The previous prime is 855906839. The next prime is 855906847. The reversal of 855906843 is 348609558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (855906839) and next prime (855906847).

It is not a de Polignac number, because 855906843 - 2² = 855906839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 855906792 and 855906801.

It is not an unprimeable number, because it can be changed into a prime (855906847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42438 + ... + 59268.

It is an arithmetic number, because the mean of its divisors is an integer number (41204736).

Almost surely, 2^855906843 is an apocalyptic number.

855906843 is a deficient number, since it is larger than the sum of its proper divisors (462644709).

855906843 is a wasteful number, since it uses less digits than its factorization.

855906843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16935.

The product of its (nonzero) digits is 1036800, while the sum is 48.

The square root of 855906843 is about 29255.8856129839. The cubic root of 855906843 is about 949.4574346019.

The spelling of 855906843 in words is "eight hundred fifty-five million, nine hundred six thousand, eight hundred forty-three".