139595207 has 2 divisors, whose sum is σ = 139595208. Its totient is φ = 139595206.

The previous prime is 139595171. The next prime is 139595219. The reversal of 139595207 is 702595931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139595207 - 2²⁶ = 72486343 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 (139595227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69797603 + 69797604.

It is an arithmetic number, because the mean of its divisors is an integer number (69797604).

Almost surely, 2^139595207 is an apocalyptic number.

139595207 is a deficient number, since it is larger than the sum of its proper divisors (1).

139595207 is an equidigital number, since it uses as much as digits as its factorization.

139595207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 139595207 is about 11815.0415572693. The cubic root of 139595207 is about 518.7484782072.

The spelling of 139595207 in words is "one hundred thirty-nine million, five hundred ninety-five thousand, two hundred seven".