289850121 has 12 divisors (see below), whose sum is σ = 456733680. Its totient is φ = 175666680.

The previous prime is 289850089. The next prime is 289850173. The reversal of 289850121 is 121058982.

It is not a de Polignac number, because 289850121 - 2⁵ = 289850089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289850191) 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 11 ways as a sum of consecutive naturals, for example, 1463791 + ... + 1463988.

It is an arithmetic number, because the mean of its divisors is an integer number (38061140).

Almost surely, 2^289850121 is an apocalyptic number.

It is an amenable number.

289850121 is a deficient number, since it is larger than the sum of its proper divisors (166883559).

289850121 is a wasteful number, since it uses less digits than its factorization.

289850121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927796 (or 2927793 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 289850121 is about 17024.9851982315. The cubic root of 289850121 is about 661.7965446949.

The spelling of 289850121 in words is "two hundred eighty-nine million, eight hundred fifty thousand, one hundred twenty-one".