289739 has 8 divisors (see below), whose sum is σ = 305760. Its totient is φ = 274176.

The previous prime is 289733. The next prime is 289741. The reversal of 289739 is 937982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289739 - 2¹² = 285643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289733) 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, 2762 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2²⁸⁹⁷³⁹ is an apocalyptic number.

289739 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

289739 is a deficient number, since it is larger than the sum of its proper divisors (16021).

289739 is a wasteful number, since it uses less digits than its factorization.

289739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229.

The product of its digits is 27216, while the sum is 38.

The square root of 289739 is about 538.2740937478. The cubic root of 289739 is about 66.1711962022.

It can be divided in two parts, 28973 and 9, that added together give a palindrome (28982).

The spelling of 289739 in words is "two hundred eighty-nine thousand, seven hundred thirty-nine".