139806713 has 2 divisors, whose sum is σ = 139806714. Its totient is φ = 139806712.

The previous prime is 139806661. The next prime is 139806727. The reversal of 139806713 is 317608931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107578384 + 32228329 = 10372^2 + 5677^2 .

It is an emirp because it is prime and its reverse (317608931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139806713 - 2⁶ = 139806649 is a prime.

It is equal to p_7901876 and since 139806713 and 7901876 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (139806743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69903356 + 69903357.

It is an arithmetic number, because the mean of its divisors is an integer number (69903357).

Almost surely, 2^139806713 is an apocalyptic number.

It is an amenable number.

139806713 is a deficient number, since it is larger than the sum of its proper divisors (1).

139806713 is an equidigital number, since it uses as much as digits as its factorization.

139806713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 139806713 is about 11823.9888785469. The cubic root of 139806713 is about 519.0103378410.

The spelling of 139806713 in words is "one hundred thirty-nine million, eight hundred six thousand, seven hundred thirteen".