139908 has 24 divisors (see below), whose sum is σ = 332640. Its totient is φ = 45760.

The previous prime is 139907. The next prime is 139921. The reversal of 139908 is 809931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (139901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003 + ... + 1133.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2¹³⁹⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

139908 is an abundant number, since it is smaller than the sum of its proper divisors (192732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139908 is a wasteful number, since it uses less digits than its factorization.

139908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 139908 is about 374.0427783022. The cubic root of 139908 is about 51.9135644914.

The spelling of 139908 in words is "one hundred thirty-nine thousand, nine hundred eight".