139522039 has 2 divisors, whose sum is σ = 139522040. Its totient is φ = 139522038.

The previous prime is 139522021. The next prime is 139522051. The reversal of 139522039 is 930225931.

It is a strong prime.

It is an emirp because it is prime and its reverse (930225931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139522039 - 2²⁵ = 105967607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139521995 and 139522013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139522099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69761019 + 69761020.

It is an arithmetic number, because the mean of its divisors is an integer number (69761020).

Almost surely, 2^139522039 is an apocalyptic number.

139522039 is a deficient number, since it is larger than the sum of its proper divisors (1).

139522039 is an equidigital number, since it uses as much as digits as its factorization.

139522039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 139522039 is about 11811.9447594374. The cubic root of 139522039 is about 518.6578293880.

The spelling of 139522039 in words is "one hundred thirty-nine million, five hundred twenty-two thousand, thirty-nine".