8809812 has 36 divisors (see below), whose sum is σ = 24294816. Its totient is φ = 2669520.

The previous prime is 8809789. The next prime is 8809817. The reversal of 8809812 is 2189088.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×8809812² = 155225574950688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8809817) 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 11 ways as a sum of consecutive naturals, for example, 10728 + ... + 11519.

It is an arithmetic number, because the mean of its divisors is an integer number (674856).

Almost surely, 2^8809812 is an apocalyptic number.

It is an amenable number.

8809812 is an abundant number, since it is smaller than the sum of its proper divisors (15485004).

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

8809812 is a wasteful number, since it uses less digits than its factorization.

8809812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22268 (or 22263 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 8809812 is about 2968.1327463575. The cubic root of 8809812 is about 206.5327274118.

The spelling of 8809812 in words is "eight million, eight hundred nine thousand, eight hundred twelve".