289313 has 4 divisors (see below), whose sum is σ = 304560. Its totient is φ = 274068.

The previous prime is 289309. The next prime is 289319. The reversal of 289313 is 313982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 289313 - 2² = 289309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7595 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (76140).

2²⁸⁹³¹³ is an apocalyptic number.

It is an amenable number.

289313 is a deficient number, since it is larger than the sum of its proper divisors (15247).

289313 is a wasteful number, since it uses less digits than its factorization.

289313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15246.

The product of its digits is 1296, while the sum is 26.

The square root of 289313 is about 537.8782390095. The cubic root of 289313 is about 66.1387500396.

The spelling of 289313 in words is "two hundred eighty-nine thousand, three hundred thirteen".