Search a number
-
+
389927 is a prime number
BaseRepresentation
bin1011111001100100111
3201210212202
41133030213
544434202
612205115
73212546
oct1371447
9653782
10389927
11246a5a
1216979b
13108635
14a215d
157a802
hex5f327

389927 has 2 divisors, whose sum is σ = 389928. Its totient is φ = 389926.

The previous prime is 389923. The next prime is 389941. The reversal of 389927 is 729983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389927 - 22 = 389923 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 (389923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194963 + 194964.

It is an arithmetic number, because the mean of its divisors is an integer number (194964).

2389927 is an apocalyptic number.

389927 is a deficient number, since it is larger than the sum of its proper divisors (1).

389927 is an equidigital number, since it uses as much as digits as its factorization.

389927 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 389927 is about 624.4413503284. The cubic root of 389927 is about 73.0568769222.

The spelling of 389927 in words is "three hundred eighty-nine thousand, nine hundred twenty-seven".