289388 has 12 divisors (see below), whose sum is σ = 552552. Its totient is φ = 131520.

The previous prime is 289381. The next prime is 289397. The reversal of 289388 is 883982.

It is not an unprimeable number, because it can be changed into a prime (289381) 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, 3245 + ... + 3332.

It is an arithmetic number, because the mean of its divisors is an integer number (46046).

2²⁸⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

289388 is a deficient number, since it is larger than the sum of its proper divisors (263164).

289388 is a wasteful number, since it uses less digits than its factorization.

289388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6592 (or 6590 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 289388 is about 537.9479528728. The cubic root of 289388 is about 66.1444647012.

The spelling of 289388 in words is "two hundred eighty-nine thousand, three hundred eighty-eight".