139959 has 6 divisors (see below), whose sum is σ = 202176. Its totient is φ = 93300.

The previous prime is 139943. The next prime is 139967. The reversal of 139959 is 959931.

139959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139959 - 2⁴ = 139943 is a prime.

139959 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139959.

It is not an unprimeable number, because it can be changed into a prime (139939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7767 + ... + 7784.

It is an arithmetic number, because the mean of its divisors is an integer number (33696).

2¹³⁹⁹⁵⁹ is an apocalyptic number.

139959 is a deficient number, since it is larger than the sum of its proper divisors (62217).

139959 is a wasteful number, since it uses less digits than its factorization.

139959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15557 (or 15554 counting only the distinct ones).

The product of its digits is 10935, while the sum is 36.

The square root of 139959 is about 374.1109461109. The cubic root of 139959 is about 51.9198716603.

The spelling of 139959 in words is "one hundred thirty-nine thousand, nine hundred fifty-nine".