8809864 has 32 divisors (see below), whose sum is σ = 19195200. Its totient is φ = 3712320.

The previous prime is 8809861. The next prime is 8809877. The reversal of 8809864 is 4689088.

It is a super-2 number, since 2×8809864² = 155227407396992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8809864.

It is not an unprimeable number, because it can be changed into a prime (8809861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2127 + ... + 4705.

It is an arithmetic number, because the mean of its divisors is an integer number (599850).

Almost surely, 2^8809864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8809864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9597600).

8809864 is an abundant number, since it is smaller than the sum of its proper divisors (10385336).

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

8809864 is a wasteful number, since it uses less digits than its factorization.

8809864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653 (or 2649 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 8809864 is about 2968.1415060607. The cubic root of 8809864 is about 206.5331337648.

The spelling of 8809864 in words is "eight million, eight hundred nine thousand, eight hundred sixty-four".