289868 has 6 divisors (see below), whose sum is σ = 507276. Its totient is φ = 144932.

The previous prime is 289859. The next prime is 289871. The reversal of 289868 is 868982.

It is a happy number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289868.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36230 + ... + 36237.

It is an arithmetic number, because the mean of its divisors is an integer number (84546).

2²⁸⁹⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

289868 is a deficient number, since it is larger than the sum of its proper divisors (217408).

289868 is a wasteful number, since it uses less digits than its factorization.

289868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72471 (or 72469 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 289868 is about 538.3939078407. The cubic root of 289868 is about 66.1810151747.

The spelling of 289868 in words is "two hundred eighty-nine thousand, eight hundred sixty-eight".