139520413 has 2 divisors, whose sum is σ = 139520414. Its totient is φ = 139520412.

The previous prime is 139520387. The next prime is 139520449. The reversal of 139520413 is 314025931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126292644 + 13227769 = 11238^2 + 3637^2 .

It is an emirp because it is prime and its reverse (314025931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139520413 - 2¹³ = 139512221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139520483) 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, 69760206 + 69760207.

It is an arithmetic number, because the mean of its divisors is an integer number (69760207).

Almost surely, 2^139520413 is an apocalyptic number.

It is an amenable number.

139520413 is a deficient number, since it is larger than the sum of its proper divisors (1).

139520413 is an equidigital number, since it uses as much as digits as its factorization.

139520413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 139520413 is about 11811.8759306048. The cubic root of 139520413 is about 518.6558145548.

The spelling of 139520413 in words is "one hundred thirty-nine million, five hundred twenty thousand, four hundred thirteen".