219389 has 2 divisors, whose sum is σ = 219390. Its totient is φ = 219388.

The previous prime is 219377. The next prime is 219407. The reversal of 219389 is 983912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195364 + 24025 = 442^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 219389 - 2⁸ = 219133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109694 + 109695.

It is an arithmetic number, because the mean of its divisors is an integer number (109695).

2²¹⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

219389 is a deficient number, since it is larger than the sum of its proper divisors (1).

219389 is an equidigital number, since it uses as much as digits as its factorization.

219389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 219389 is about 468.3897949358. The cubic root of 219389 is about 60.3121693182.

It can be divided in two parts, 2 and 19389, that added together give a palindrome (19391).

The spelling of 219389 in words is "two hundred nineteen thousand, three hundred eighty-nine".