812404936 has 32 divisors (see below), whose sum is σ = 1749911040. Its totient is φ = 346364928.

The previous prime is 812404897. The next prime is 812404937. The reversal of 812404936 is 639404218.

It is a junction number, because it is equal to n+sod(n) for n = 812404895 and 812404904.

It is not an unprimeable number, because it can be changed into a prime (812404937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26776 + ... + 48391.

It is an arithmetic number, because the mean of its divisors is an integer number (54684720).

Almost surely, 2^812404936 is an apocalyptic number.

It is an amenable number.

812404936 is an abundant number, since it is smaller than the sum of its proper divisors (937506104).

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

812404936 is a wasteful number, since it uses less digits than its factorization.

812404936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75373 (or 75369 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 812404936 is about 28502.7180458285. The cubic root of 812404936 is about 933.0913952269.

The spelling of 812404936 in words is "eight hundred twelve million, four hundred four thousand, nine hundred thirty-six".