289495 has 4 divisors (see below), whose sum is σ = 347400. Its totient is φ = 231592.

The previous prime is 289489. The next prime is 289511. The reversal of 289495 is 594982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289495 - 2⁵ = 289463 is a prime.

289495 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28945 + ... + 28954.

It is an arithmetic number, because the mean of its divisors is an integer number (86850).

2²⁸⁹⁴⁹⁵ is an apocalyptic number.

289495 is a deficient number, since it is larger than the sum of its proper divisors (57905).

289495 is an equidigital number, since it uses as much as digits as its factorization.

289495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57904.

The product of its digits is 25920, while the sum is 37.

The square root of 289495 is about 538.0473956818. The cubic root of 289495 is about 66.1526159095.

It can be divided in two parts, 289 and 495, that added together give a square (784 = 28²).

The spelling of 289495 in words is "two hundred eighty-nine thousand, four hundred ninety-five".