9813812 has 6 divisors (see below), whose sum is σ = 17174178. Its totient is φ = 4906904.

The previous prime is 9813787. The next prime is 9813827. The reversal of 9813812 is 2183189.

It can be written as a sum of positive squares in only one way, i.e., 5635876 + 4177936 = 2374^2 + 2044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226723 + ... + 1226730.

It is an arithmetic number, because the mean of its divisors is an integer number (2862363).

Almost surely, 2^9813812 is an apocalyptic number.

It is an amenable number.

9813812 is a deficient number, since it is larger than the sum of its proper divisors (7360366).

9813812 is a wasteful number, since it uses less digits than its factorization.

9813812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453457 (or 2453455 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 9813812 is about 3132.7004325342. The cubic root of 9813812 is about 214.0979840692.

The spelling of 9813812 in words is "nine million, eight hundred thirteen thousand, eight hundred twelve".