855804807 has 72 divisors (see below), whose sum is σ = 1488765824. Its totient is φ = 470448000.

The previous prime is 855804797. The next prime is 855804823. The reversal of 855804807 is 708408558.

It is not a de Polignac number, because 855804807 - 2¹² = 855800711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855804827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 863082 + ... + 864072.

Almost surely, 2^855804807 is an apocalyptic number.

855804807 is a deficient number, since it is larger than the sum of its proper divisors (632961017).

855804807 is a wasteful number, since it uses less digits than its factorization.

855804807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 855804807 is about 29254.1417067738. The cubic root of 855804807 is about 949.4197035920.

The spelling of 855804807 in words is "eight hundred fifty-five million, eight hundred four thousand, eight hundred seven".