289618849 has 12 divisors (see below), whose sum is σ = 314326656. Its totient is φ = 266730672.

The previous prime is 289618837. The next prime is 289618859. The reversal of 289618849 is 948816982.

It is not a de Polignac number, because 289618849 - 2¹⁵ = 289586081 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 289618849.

It is not an unprimeable number, because it can be changed into a prime (289618859) 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 11 ways as a sum of consecutive naturals, for example, 83304 + ... + 86710.

It is an arithmetic number, because the mean of its divisors is an integer number (26193888).

Almost surely, 2^289618849 is an apocalyptic number.

It is an amenable number.

289618849 is a deficient number, since it is larger than the sum of its proper divisors (24707807).

289618849 is a wasteful number, since it uses less digits than its factorization.

289618849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3923 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 55.

The square root of 289618849 is about 17018.1917076991. The cubic root of 289618849 is about 661.6204815907.

The spelling of 289618849 in words is "two hundred eighty-nine million, six hundred eighteen thousand, eight hundred forty-nine".