8389121 has 16 divisors (see below), whose sum is σ = 9422784. Its totient is φ = 7418304.

The previous prime is 8389111. The next prime is 8389123. The reversal of 8389121 is 1219838.

8389121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8389121 - 2⁶ = 8389057 is a prime.

It is a Smith number, since the sum of its digits (32) 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 not an unprimeable number, because it can be changed into a prime (8389123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51386 + ... + 51548.

It is an arithmetic number, because the mean of its divisors is an integer number (588924).

Almost surely, 2^8389121 is an apocalyptic number.

It is an amenable number.

8389121 is a deficient number, since it is larger than the sum of its proper divisors (1033663).

8389121 is a wasteful number, since it uses less digits than its factorization.

8389121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its digits is 3456, while the sum is 32.

The square root of 8389121 is about 2896.3979353673. The cubic root of 8389121 is about 203.1914764983.

The spelling of 8389121 in words is "eight million, three hundred eighty-nine thousand, one hundred twenty-one".