289229849 has 4 divisors (see below), whose sum is σ = 290142564. Its totient is φ = 288317136.

The previous prime is 289229833. The next prime is 289229861. The reversal of 289229849 is 948922982.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27825625 + 261404224 = 5275^2 + 16168^2 .

It is a cyclic number.

It is not a de Polignac number, because 289229849 - 2⁴ = 289229833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 289229849.

It is not an unprimeable number, because it can be changed into a prime (289229819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455882 + ... + 456515.

It is an arithmetic number, because the mean of its divisors is an integer number (72535641).

Almost surely, 2^289229849 is an apocalyptic number.

It is an amenable number.

289229849 is a deficient number, since it is larger than the sum of its proper divisors (912715).

289229849 is an equidigital number, since it uses as much as digits as its factorization.

289229849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912714.

The product of its digits is 1492992, while the sum is 53.

The square root of 289229849 is about 17006.7589210878. The cubic root of 289229849 is about 661.3241315398.

The spelling of 289229849 in words is "two hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred forty-nine".