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4489 = 672

4489 has 3 divisors (see below), whose sum is σ = 4557. Its totient is φ = 4422.

The previous prime is 4483. The next prime is 4493. The reversal of 4489 is 9844.

4489 = T66 + T67.

The square root of 4489 is 67.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 4489 - 23 = 4481 is a prime.

It is a super-2 number, since 2×44892 = 40302242, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10 and base 16.

It is not an unprimeable number, because it can be changed into a prime (4481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 34 + ... + 100.

It is an arithmetic number, because the mean of its divisors is an integer number (1519).

4489 is the 67-th square number.

4489 is the 34-th centered octagonal number.

It is an amenable number.

4489 is a deficient number, since it is larger than the sum of its proper divisors (68).

4489 is an frugal number, since it uses more digits than its factorization.

4489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 67 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The cubic root of 4489 is about 16.4961729722.

Multiplying 4489 by its sum of digits (25), we get a square (112225 = 3352).

It can be divided in two parts, 44 and 89, that multiplied together give a triangular number (3916 = T88).

The spelling of 4489 in words is "four thousand, four hundred eighty-nine".

Divisors: 1 67 4489