139539707 has 2 divisors, whose sum is σ = 139539708. Its totient is φ = 139539706.

The previous prime is 139539703. The next prime is 139539713. The reversal of 139539707 is 707935931.

139539707 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 is a cyclic number.

It is not a de Polignac number, because 139539707 - 2² = 139539703 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139539703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69769853 + 69769854.

It is an arithmetic number, because the mean of its divisors is an integer number (69769854).

Almost surely, 2^139539707 is an apocalyptic number.

139539707 is a deficient number, since it is larger than the sum of its proper divisors (1).

139539707 is an equidigital number, since it uses as much as digits as its factorization.

139539707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 139539707 is about 11812.6926227681. The cubic root of 139539707 is about 518.6797214127.

The spelling of 139539707 in words is "one hundred thirty-nine million, five hundred thirty-nine thousand, seven hundred seven".