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389743 is a prime number
BaseRepresentation
bin1011111001001101111
3201210121221
41133021233
544432433
612204211
73212164
oct1371157
9653557
10389743
11246902
12169667
13108523
14a206b
157a72d
hex5f26f

389743 has 2 divisors, whose sum is σ = 389744. Its totient is φ = 389742.

The previous prime is 389723. The next prime is 389749. The reversal of 389743 is 347983.

It is a strong prime.

It is an emirp because it is prime and its reverse (347983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389743 - 29 = 389231 is a prime.

389743 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 389699 and 389708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389749) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194871 + 194872.

It is an arithmetic number, because the mean of its divisors is an integer number (194872).

2389743 is an apocalyptic number.

389743 is a deficient number, since it is larger than the sum of its proper divisors (1).

389743 is an equidigital number, since it uses as much as digits as its factorization.

389743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 389743 is about 624.2940012526. The cubic root of 389743 is about 73.0453836766.

The spelling of 389743 in words is "three hundred eighty-nine thousand, seven hundred forty-three".