289481 has 4 divisors (see below), whose sum is σ = 291732. Its totient is φ = 287232.

The previous prime is 289477. The next prime is 289489. The reversal of 289481 is 184982.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55225 + 234256 = 235^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 289481 - 2² = 289477 is a prime.

It is a super-2 number, since 2×289481² = 167598498722, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289481.

It is not an unprimeable number, because it can be changed into a prime (289489) 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, 920 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (72933).

2²⁸⁹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

289481 is a deficient number, since it is larger than the sum of its proper divisors (2251).

289481 is a wasteful number, since it uses less digits than its factorization.

289481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250.

The product of its digits is 4608, while the sum is 32.

The square root of 289481 is about 538.0343855182. The cubic root of 289481 is about 66.1515495105.

The spelling of 289481 in words is "two hundred eighty-nine thousand, four hundred eighty-one".