289646 has 16 divisors (see below), whose sum is σ = 526176. Its totient is φ = 116736.

The previous prime is 289643. The next prime is 289657. The reversal of 289646 is 646982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 846.

It is an arithmetic number, because the mean of its divisors is an integer number (32886).

2²⁸⁹⁶⁴⁶ is an apocalyptic number.

289646 is a deficient number, since it is larger than the sum of its proper divisors (236530).

289646 is a wasteful number, since it uses less digits than its factorization.

289646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243.

The product of its digits is 20736, while the sum is 35.

The square root of 289646 is about 538.1876995993. The cubic root of 289646 is about 66.1641156001.

The spelling of 289646 in words is "two hundred eighty-nine thousand, six hundred forty-six".