139925189 has 2 divisors, whose sum is σ = 139925190. Its totient is φ = 139925188.

The previous prime is 139925173. The next prime is 139925197. The reversal of 139925189 is 981529931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135536164 + 4389025 = 11642^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 139925189 - 2⁴ = 139925173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139925129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69962594 + 69962595.

It is an arithmetic number, because the mean of its divisors is an integer number (69962595).

Almost surely, 2^139925189 is an apocalyptic number.

It is an amenable number.

139925189 is a deficient number, since it is larger than the sum of its proper divisors (1).

139925189 is an equidigital number, since it uses as much as digits as its factorization.

139925189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 47.

The square root of 139925189 is about 11828.9978020118. The cubic root of 139925189 is about 519.1569042591.

The spelling of 139925189 in words is "one hundred thirty-nine million, nine hundred twenty-five thousand, one hundred eighty-nine".