8990121 has 16 divisors (see below), whose sum is σ = 13875200. Its totient is φ = 5071248.

The previous prime is 8990101. The next prime is 8990123. The reversal of 8990121 is 1210998.

8990121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8990121 - 2⁹ = 8989609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8990123) 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, 1051 + ... + 4368.

It is an arithmetic number, because the mean of its divisors is an integer number (867200).

Almost surely, 2^8990121 is an apocalyptic number.

It is an amenable number.

8990121 is a deficient number, since it is larger than the sum of its proper divisors (4885079).

8990121 is a wasteful number, since it uses less digits than its factorization.

8990121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5508.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 8990121 is about 2998.3530479248. The cubic root of 8990121 is about 207.9322464853.

The spelling of 8990121 in words is "eight million, nine hundred ninety thousand, one hundred twenty-one".