8821149 has 32 divisors (see below), whose sum is σ = 13094400. Its totient is φ = 5261760.

The previous prime is 8821139. The next prime is 8821151. The reversal of 8821149 is 9411288.

8821149 is nontrivially palindromic in base 7.

8821149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8821149 - 2¹⁶ = 8755613 is a prime.

8821149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8821129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144579 + ... + 144639.

It is an arithmetic number, because the mean of its divisors is an integer number (409200).

Almost surely, 2^8821149 is an apocalyptic number.

It is an amenable number.

8821149 is a deficient number, since it is larger than the sum of its proper divisors (4273251).

8821149 is a wasteful number, since it uses less digits than its factorization.

8821149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185.

The product of its digits is 4608, while the sum is 33.

The square root of 8821149 is about 2970.0419188961. The cubic root of 8821149 is about 206.6212823802.

The spelling of 8821149 in words is "eight million, eight hundred twenty-one thousand, one hundred forty-nine".