139308 has 48 divisors (see below), whose sum is σ = 376320. Its totient is φ = 39744.

The previous prime is 139303. The next prime is 139309. The reversal of 139308 is 803931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139301) 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 15 ways as a sum of consecutive naturals, for example, 2941 + ... + 2987.

It is an arithmetic number, because the mean of its divisors is an integer number (7840).

2¹³⁹³⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188160).

139308 is an abundant number, since it is smaller than the sum of its proper divisors (237012).

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

139308 is a wasteful number, since it uses less digits than its factorization.

139308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 139308 is about 373.2398692530. The cubic root of 139308 is about 51.8392471503.

The spelling of 139308 in words is "one hundred thirty-nine thousand, three hundred eight".