812484855 has 48 divisors (see below), whose sum is σ = 1733309760. Its totient is φ = 342849024.

The previous prime is 812484839. The next prime is 812484857. The reversal of 812484855 is 558484218.

It is not a de Polignac number, because 812484855 - 2⁴ = 812484839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 812484855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812484857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95110 + ... + 103299.

It is an arithmetic number, because the mean of its divisors is an integer number (36110620).

Almost surely, 2^812484855 is an apocalyptic number.

812484855 is an abundant number, since it is smaller than the sum of its proper divisors (920824905).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812484855 is a wasteful number, since it uses less digits than its factorization.

812484855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198440 (or 198437 counting only the distinct ones).

The product of its digits is 409600, while the sum is 45.

The square root of 812484855 is about 28504.1199653664. The cubic root of 812484855 is about 933.1219913343.

The spelling of 812484855 in words is "eight hundred twelve million, four hundred eighty-four thousand, eight hundred fifty-five".