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138000539 is a prime number
BaseRepresentation
bin10000011100110…
…11100010011011
3100121200011011002
420032123202123
5240312004124
621405455215
73263661635
oct1016334233
9317604132
10138000539
1170996936
123a27150b
132278a231
1414483a55
15c1ae0ae
hex839b89b

138000539 has 2 divisors, whose sum is σ = 138000540. Its totient is φ = 138000538.

The previous prime is 138000521. The next prime is 138000557. The reversal of 138000539 is 935000831.

138000539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (138000521) and next prime (138000557).

It is an emirp because it is prime and its reverse (935000831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-138000539 is a prime.

It is equal to p7805522 and since 138000539 and 7805522 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138003539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69000269 + 69000270.

It is an arithmetic number, because the mean of its divisors is an integer number (69000270).

Almost surely, 2138000539 is an apocalyptic number.

138000539 is a deficient number, since it is larger than the sum of its proper divisors (1).

138000539 is an equidigital number, since it uses as much as digits as its factorization.

138000539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 138000539 is about 11747.3630658118. The cubic root of 138000539 is about 516.7655980285.

The spelling of 138000539 in words is "one hundred thirty-eight million, five hundred thirty-nine", and thus it is an aban number.