812149796 has 6 divisors (see below), whose sum is σ = 1421262150. Its totient is φ = 406074896.

The previous prime is 812149777. The next prime is 812149829. The reversal of 812149796 is 697941218.

It can be written as a sum of positive squares in only one way, i.e., 728244196 + 83905600 = 26986^2 + 9160^2 .

It is a super-2 number, since 2×812149796² = 1319174582285683232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 812149796.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 101518721 + ... + 101518728.

It is an arithmetic number, because the mean of its divisors is an integer number (236877025).

Almost surely, 2^812149796 is an apocalyptic number.

It is an amenable number.

812149796 is a deficient number, since it is larger than the sum of its proper divisors (609112354).

812149796 is a wasteful number, since it uses less digits than its factorization.

812149796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203037453 (or 203037451 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 812149796 is about 28498.2419808661. The cubic root of 812149796 is about 932.9937042624.

The spelling of 812149796 in words is "eight hundred twelve million, one hundred forty-nine thousand, seven hundred ninety-six".