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389819 is a prime number
BaseRepresentation
bin1011111001010111011
3201210201202
41133022323
544433234
612204415
73212333
oct1371273
9653652
10389819
11246971
1216970b
13108581
14a20c3
157a77e
hex5f2bb

389819 has 2 divisors, whose sum is σ = 389820. Its totient is φ = 389818.

The previous prime is 389797. The next prime is 389839. The reversal of 389819 is 918983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389819 - 28 = 389563 is a prime.

It is a super-2 number, since 2×3898192 = 303917705522, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389819.

It is not a weakly prime, because it can be changed into another prime (389839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194909 + 194910.

It is an arithmetic number, because the mean of its divisors is an integer number (194910).

2389819 is an apocalyptic number.

389819 is a deficient number, since it is larger than the sum of its proper divisors (1).

389819 is an equidigital number, since it uses as much as digits as its factorization.

389819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 38.

The square root of 389819 is about 624.3548670428. The cubic root of 389819 is about 73.0501313251.

The spelling of 389819 in words is "three hundred eighty-nine thousand, eight hundred nineteen".