139397413 has 2 divisors, whose sum is σ = 139397414. Its totient is φ = 139397412.

The previous prime is 139397393. The next prime is 139397431. The reversal of 139397413 is 314793931.

Together with next prime (139397431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132756484 + 6640929 = 11522^2 + 2577^2 .

It is a cyclic number.

It is not a de Polignac number, because 139397413 - 2¹⁷ = 139266341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139397513) 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, 69698706 + 69698707.

It is an arithmetic number, because the mean of its divisors is an integer number (69698707).

Almost surely, 2^139397413 is an apocalyptic number.

It is an amenable number.

139397413 is a deficient number, since it is larger than the sum of its proper divisors (1).

139397413 is an equidigital number, since it uses as much as digits as its factorization.

139397413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 40.

The square root of 139397413 is about 11806.6681582909. The cubic root of 139397413 is about 518.5033555706.

The spelling of 139397413 in words is "one hundred thirty-nine million, three hundred ninety-seven thousand, four hundred thirteen".