9873812 has 12 divisors (see below), whose sum is σ = 18608436. Its totient is φ = 4557120.

The previous prime is 9873811. The next prime is 9873817. The reversal of 9873812 is 2183789.

It can be written as a sum of positive squares in 2 ways, for example, as 2669956 + 7203856 = 1634^2 + 2684^2 .

It is a super-2 number, since 2×9873812² = 194984326822688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9873811) 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 3 ways as a sum of consecutive naturals, for example, 94889 + ... + 94992.

It is an arithmetic number, because the mean of its divisors is an integer number (1550703).

Almost surely, 2^9873812 is an apocalyptic number.

It is an amenable number.

9873812 is a deficient number, since it is larger than the sum of its proper divisors (8734624).

9873812 is a wasteful number, since it uses less digits than its factorization.

9873812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189898 (or 189896 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 9873812 is about 3142.2622423980. The cubic root of 9873812 is about 214.5334175997.

The spelling of 9873812 in words is "nine million, eight hundred seventy-three thousand, eight hundred twelve".