201389 has 2 divisors, whose sum is σ = 201390. Its totient is φ = 201388.

The previous prime is 201359. The next prime is 201401. The reversal of 201389 is 983102.

201389 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., 198025 + 3364 = 445^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 201389 - 2¹² = 197293 is a prime.

It is a Chen prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201329) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100694 + 100695.

It is an arithmetic number, because the mean of its divisors is an integer number (100695).

2²⁰¹³⁸⁹ is an apocalyptic number.

It is an amenable number.

201389 is a deficient number, since it is larger than the sum of its proper divisors (1).

201389 is an equidigital number, since it uses as much as digits as its factorization.

201389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 201389 is about 448.7638577248. The cubic root of 201389 is about 58.6154245798.

The spelling of 201389 in words is "two hundred one thousand, three hundred eighty-nine".