289768449 has 8 divisors (see below), whose sum is σ = 406692640. Its totient is φ = 183011616.

The previous prime is 289768433. The next prime is 289768469. The reversal of 289768449 is 944867982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289768449 - 2⁴ = 289768433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 5083657 = 289768449 / (2 + 8 + 9 + 7 + 6 + 8 + 4 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289768469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2541772 + ... + 2541885.

It is an arithmetic number, because the mean of its divisors is an integer number (50836580).

Almost surely, 2^289768449 is an apocalyptic number.

It is an amenable number.

289768449 is a deficient number, since it is larger than the sum of its proper divisors (116924191).

289768449 is a wasteful number, since it uses less digits than its factorization.

289768449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083679.

The product of its digits is 6967296, while the sum is 57.

The square root of 289768449 is about 17022.5864368491. The cubic root of 289768449 is about 661.7343800094.

The spelling of 289768449 in words is "two hundred eighty-nine million, seven hundred sixty-eight thousand, four hundred forty-nine".