8821885 has 4 divisors (see below), whose sum is σ = 10586268. Its totient is φ = 7057504.

The previous prime is 8821877. The next prime is 8821889. The reversal of 8821885 is 5881288.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1104601 + 7717284 = 1051^2 + 2778^2 .

It is a cyclic number.

It is not a de Polignac number, because 8821885 - 2³ = 8821877 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8821889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882184 + ... + 882193.

It is an arithmetic number, because the mean of its divisors is an integer number (2646567).

Almost surely, 2^8821885 is an apocalyptic number.

It is an amenable number.

8821885 is a deficient number, since it is larger than the sum of its proper divisors (1764383).

8821885 is a wasteful number, since it uses less digits than its factorization.

8821885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764382.

The product of its digits is 40960, while the sum is 40.

The square root of 8821885 is about 2970.1658202868. The cubic root of 8821885 is about 206.6270287607.

The spelling of 8821885 in words is "eight million, eight hundred twenty-one thousand, eight hundred eighty-five".