139065529 has 2 divisors, whose sum is σ = 139065530. Its totient is φ = 139065528.

The previous prime is 139065523. The next prime is 139065581. The reversal of 139065529 is 925560931.

It is a happy number.

139065529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72675625 + 66389904 = 8525^2 + 8148^2 .

It is a cyclic number.

It is not a de Polignac number, because 139065529 - 2¹¹ = 139063481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139065491 and 139065500.

It is not a weakly prime, because it can be changed into another prime (139065523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69532764 + 69532765.

It is an arithmetic number, because the mean of its divisors is an integer number (69532765).

Almost surely, 2^139065529 is an apocalyptic number.

It is an amenable number.

139065529 is a deficient number, since it is larger than the sum of its proper divisors (1).

139065529 is an equidigital number, since it uses as much as digits as its factorization.

139065529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 139065529 is about 11792.6048437146. The cubic root of 139065529 is about 518.0915360764.

The spelling of 139065529 in words is "one hundred thirty-nine million, sixty-five thousand, five hundred twenty-nine".