289465 has 16 divisors (see below), whose sum is σ = 400320. Its totient is φ = 198720.

The previous prime is 289463. The next prime is 289469. The reversal of 289465 is 564982.

It is a happy number.

It is not a de Polignac number, because 289465 - 2¹ = 289463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 289465.

It is not an unprimeable number, because it can be changed into a prime (289463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907 + ... + 1183.

It is an arithmetic number, because the mean of its divisors is an integer number (25020).

2²⁸⁹⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

289465 is a deficient number, since it is larger than the sum of its proper divisors (110855).

289465 is a wasteful number, since it uses less digits than its factorization.

289465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its digits is 17280, while the sum is 34.

The square root of 289465 is about 538.0195163746. The cubic root of 289465 is about 66.1503307266.

The spelling of 289465 in words is "two hundred eighty-nine thousand, four hundred sixty-five".