8841921 has 16 divisors (see below), whose sum is σ = 13618368. Its totient is φ = 5043200.

The previous prime is 8841881. The next prime is 8841941. The reversal of 8841921 is 1291488.

It is a cyclic number.

It is not a de Polignac number, because 8841921 - 2¹⁵ = 8809153 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8841941) 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 15 ways as a sum of consecutive naturals, for example, 7320 + ... + 8441.

It is an arithmetic number, because the mean of its divisors is an integer number (851148).

Almost surely, 2^8841921 is an apocalyptic number.

It is an amenable number.

8841921 is a deficient number, since it is larger than the sum of its proper divisors (4776447).

8841921 is a wasteful number, since it uses less digits than its factorization.

8841921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15792.

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

The square root of 8841921 is about 2973.5367830246. The cubic root of 8841921 is about 206.7833388500.

The spelling of 8841921 in words is "eight million, eight hundred forty-one thousand, nine hundred twenty-one".