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BaseRepresentation
bin100101010101
310021111
4211111
534024
615021
76652
oct4525
93244
102389
111882
121471
13111a
14c29
15a94
hex955

2389 has 2 divisors, whose sum is σ = 2390. Its totient is φ = 2388.

The previous prime is 2383. The next prime is 2393. The reversal of 2389 is 9832.

Adding to 2389 its reverse (9832), we get a palindrome (12221).

2389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1764 + 625 = 42^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 2389 - 23 = 2381 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 10 and base 13.

It is a nialpdrome in base 4, base 7, base 15 and base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194 + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (1195).

22389 is an apocalyptic number.

It is an amenable number.

2389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2389 is an equidigital number, since it uses as much as digits as its factorization.

2389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 2389 is about 48.8773976394. The cubic root of 2389 is about 13.3681727756.

The spelling of 2389 in words is "two thousand, three hundred eighty-nine".