8821385 has 16 divisors (see below), whose sum is σ = 11404800. Its totient is φ = 6525696.

The previous prime is 8821367. The next prime is 8821387. The reversal of 8821385 is 5831288.

It is a cyclic number.

It is not a de Polignac number, because 8821385 - 2⁸ = 8821129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8821387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4136 + ... + 5894.

It is an arithmetic number, because the mean of its divisors is an integer number (712800).

Almost surely, 2^8821385 is an apocalyptic number.

8821385 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8821385 is a deficient number, since it is larger than the sum of its proper divisors (2583415).

8821385 is a wasteful number, since it uses less digits than its factorization.

8821385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840.

The product of its digits is 15360, while the sum is 35.

The square root of 8821385 is about 2970.0816487093. The cubic root of 8821385 is about 206.6231250044.

The spelling of 8821385 in words is "eight million, eight hundred twenty-one thousand, three hundred eighty-five".