139230659 has 4 divisors (see below), whose sum is σ = 139312104. Its totient is φ = 139149216.

The previous prime is 139230649. The next prime is 139230673. The reversal of 139230659 is 956032931.

139230659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139230659 - 2⁴ = 139230643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139230649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38102 + ... + 41595.

It is an arithmetic number, because the mean of its divisors is an integer number (34828026).

Almost surely, 2^139230659 is an apocalyptic number.

139230659 is a deficient number, since it is larger than the sum of its proper divisors (81445).

139230659 is an equidigital number, since it uses as much as digits as its factorization.

139230659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81444.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 139230659 is about 11799.6041882768. The cubic root of 139230659 is about 518.2965200526.

The spelling of 139230659 in words is "one hundred thirty-nine million, two hundred thirty thousand, six hundred fifty-nine".