289118913 has 4 divisors (see below), whose sum is σ = 385491888. Its totient is φ = 192745940.

The previous prime is 289118911. The next prime is 289118957. The reversal of 289118913 is 319811982.

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 289118913 - 2¹ = 289118911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289118911) 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, 48186483 + ... + 48186488.

It is an arithmetic number, because the mean of its divisors is an integer number (96372972).

Almost surely, 2^289118913 is an apocalyptic number.

It is an amenable number.

289118913 is a deficient number, since it is larger than the sum of its proper divisors (96372975).

289118913 is an equidigital number, since it uses as much as digits as its factorization.

289118913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96372974.

The product of its digits is 31104, while the sum is 42.

The square root of 289118913 is about 17003.4970814830. The cubic root of 289118913 is about 661.2395689956.

The spelling of 289118913 in words is "two hundred eighty-nine million, one hundred eighteen thousand, nine hundred thirteen".