Search a number
-
+
389297 is a prime number
BaseRepresentation
bin1011111000010110001
3201210000102
41133002301
544424142
612202145
73210656
oct1370261
9653012
10389297
11246537
12169355
1310826c
14a1c2d
157a532
hex5f0b1

389297 has 2 divisors, whose sum is σ = 389298. Its totient is φ = 389296.

The previous prime is 389287. The next prime is 389299. The reversal of 389297 is 792983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323761 + 65536 = 569^2 + 256^2 .

It is an emirp because it is prime and its reverse (792983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389297 - 28 = 389041 is a prime.

Together with 389299, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389297.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389297.

It is not a weakly prime, because it can be changed into another prime (389299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194648 + 194649.

It is an arithmetic number, because the mean of its divisors is an integer number (194649).

2389297 is an apocalyptic number.

It is an amenable number.

389297 is a deficient number, since it is larger than the sum of its proper divisors (1).

389297 is an equidigital number, since it uses as much as digits as its factorization.

389297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 389297 is about 623.9366955068. The cubic root of 389297 is about 73.0175100300.

It can be divided in two parts, 389 and 297, that added together give a palindrome (686).

The spelling of 389297 in words is "three hundred eighty-nine thousand, two hundred ninety-seven".