8340921812 has 24 divisors (see below), whose sum is σ = 14826655872. Its totient is φ = 4104928800.

The previous prime is 8340921811. The next prime is 8340921859. The reversal of 8340921812 is 2181290438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8340921811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150137 + ... + 198047.

It is an arithmetic number, because the mean of its divisors is an integer number (617777328).

Almost surely, 2^8340921812 is an apocalyptic number.

It is an amenable number.

8340921812 is a deficient number, since it is larger than the sum of its proper divisors (6485734060).

8340921812 is a wasteful number, since it uses less digits than its factorization.

8340921812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48599 (or 48597 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 8340921812 is about 91328.6472690798. The cubic root of 8340921812 is about 2028.0158739568.

The spelling of 8340921812 in words is "eight billion, three hundred forty million, nine hundred twenty-one thousand, eight hundred twelve".