289260866 has 8 divisors (see below), whose sum is σ = 434776464. Its totient is φ = 144335380.

The previous prime is 289260859. The next prime is 289260919. The reversal of 289260866 is 668062982.

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

It is a self number, because there is not a number n which added to its sum of digits gives 289260866.

It is an unprimeable number.

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, 146300 + ... + 148263.

It is an arithmetic number, because the mean of its divisors is an integer number (54347058).

Almost surely, 2^289260866 is an apocalyptic number.

289260866 is a deficient number, since it is larger than the sum of its proper divisors (145515598).

289260866 is a wasteful number, since it uses less digits than its factorization.

289260866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295056.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 289260866 is about 17007.6707987896. The cubic root of 289260866 is about 661.3477708212.

The spelling of 289260866 in words is "two hundred eighty-nine million, two hundred sixty thousand, eight hundred sixty-six".