812486894 has 4 divisors (see below), whose sum is σ = 1218730344. Its totient is φ = 406243446.

The previous prime is 812486893. The next prime is 812486989. The reversal of 812486894 is 498684218.

812486894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498684218 = 2 ⋅249342109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812486893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203121722 + ... + 203121725.

It is an arithmetic number, because the mean of its divisors is an integer number (304682586).

Almost surely, 2^812486894 is an apocalyptic number.

812486894 is a deficient number, since it is larger than the sum of its proper divisors (406243450).

812486894 is a wasteful number, since it uses less digits than its factorization.

812486894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406243449.

The product of its digits is 884736, while the sum is 50.

The square root of 812486894 is about 28504.1557321033. The cubic root of 812486894 is about 933.1227719167.

The spelling of 812486894 in words is "eight hundred twelve million, four hundred eighty-six thousand, eight hundred ninety-four".