289201121 has 4 divisors (see below), whose sum is σ = 315492144. Its totient is φ = 262910100.

The previous prime is 289201111. The next prime is 289201141. The reversal of 289201121 is 121102982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 289201121 - 2²² = 285006817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289201111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13145495 + ... + 13145516.

It is an arithmetic number, because the mean of its divisors is an integer number (78873036).

Almost surely, 2^289201121 is an apocalyptic number.

It is an amenable number.

289201121 is a deficient number, since it is larger than the sum of its proper divisors (26291023).

289201121 is a wasteful number, since it uses less digits than its factorization.

289201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26291022.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 289201121 is about 17005.9142947388. The cubic root of 289201121 is about 661.3022352881.

The spelling of 289201121 in words is "two hundred eighty-nine million, two hundred one thousand, one hundred twenty-one".