139059187 has 2 divisors, whose sum is σ = 139059188. Its totient is φ = 139059186.

The previous prime is 139059101. The next prime is 139059191. The reversal of 139059187 is 781950931.

It is a strong prime.

It is an emirp because it is prime and its reverse (781950931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139059187 - 2⁷ = 139059059 is a prime.

It is not a weakly prime, because it can be changed into another prime (139059287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69529593 + 69529594.

It is an arithmetic number, because the mean of its divisors is an integer number (69529594).

Almost surely, 2^139059187 is an apocalyptic number.

139059187 is a deficient number, since it is larger than the sum of its proper divisors (1).

139059187 is an equidigital number, since it uses as much as digits as its factorization.

139059187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 139059187 is about 11792.3359433150. The cubic root of 139059187 is about 518.0836602055.

The spelling of 139059187 in words is "one hundred thirty-nine million, fifty-nine thousand, one hundred eighty-seven".