139081559 has 2 divisors, whose sum is σ = 139081560. Its totient is φ = 139081558.

The previous prime is 139081511. The next prime is 139081561. The reversal of 139081559 is 955180931.

139081559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (955180931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139081559 is a prime.

Together with 139081561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139081589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69540779 + 69540780.

It is an arithmetic number, because the mean of its divisors is an integer number (69540780).

Almost surely, 2^139081559 is an apocalyptic number.

139081559 is a deficient number, since it is larger than the sum of its proper divisors (1).

139081559 is an equidigital number, since it uses as much as digits as its factorization.

139081559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 139081559 is about 11793.2844873682. The cubic root of 139081559 is about 518.1114420116. Note that the first 3 decimals are identical.

The spelling of 139081559 in words is "one hundred thirty-nine million, eighty-one thousand, five hundred fifty-nine".