8409121 has 8 divisors (see below), whose sum is σ = 9696384. Its totient is φ = 7143360.

The previous prime is 8409119. The next prime is 8409127. The reversal of 8409121 is 1219048.

It is a happy number.

8409121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8409121 - 2¹ = 8409119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8409127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4525 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (1212048).

Almost surely, 2^8409121 is an apocalyptic number.

It is an amenable number.

8409121 is a deficient number, since it is larger than the sum of its proper divisors (1287263).

8409121 is a wasteful number, since it uses less digits than its factorization.

8409121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10751.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 8409121 is about 2899.8484443157. The cubic root of 8409121 is about 203.3528205516.

The spelling of 8409121 in words is "eight million, four hundred nine thousand, one hundred twenty-one".