139496207 has 2 divisors, whose sum is σ = 139496208. Its totient is φ = 139496206.

The previous prime is 139496153. The next prime is 139496209. The reversal of 139496207 is 702694931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139496207 - 2⁶ = 139496143 is a prime.

Together with 139496209, 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 (139496209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69748103 + 69748104.

It is an arithmetic number, because the mean of its divisors is an integer number (69748104).

Almost surely, 2^139496207 is an apocalyptic number.

139496207 is a deficient number, since it is larger than the sum of its proper divisors (1).

139496207 is an equidigital number, since it uses as much as digits as its factorization.

139496207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 139496207 is about 11810.8512394323. The cubic root of 139496207 is about 518.6258182064.

The spelling of 139496207 in words is "one hundred thirty-nine million, four hundred ninety-six thousand, two hundred seven".