289468879 has 4 divisors (see below), whose sum is σ = 330821584. Its totient is φ = 248116176.

The previous prime is 289468873. The next prime is 289468901. The reversal of 289468879 is 978864982.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 289468879 - 2⁵ = 289468847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289468873) 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, 20676342 + ... + 20676355.

It is an arithmetic number, because the mean of its divisors is an integer number (82705396).

Almost surely, 2^289468879 is an apocalyptic number.

289468879 is a deficient number, since it is larger than the sum of its proper divisors (41352705).

289468879 is an equidigital number, since it uses as much as digits as its factorization.

289468879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41352704.

The product of its digits is 13934592, while the sum is 61.

The square root of 289468879 is about 17013.7849698414. The cubic root of 289468879 is about 661.5062620968.

The spelling of 289468879 in words is "two hundred eighty-nine million, four hundred sixty-eight thousand, eight hundred seventy-nine".