139608 has 48 divisors (see below), whose sum is σ = 433680. Its totient is φ = 39744.

The previous prime is 139597. The next prime is 139609. The reversal of 139608 is 806931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (9035).

2¹³⁹⁶⁰⁸ is an apocalyptic number.

139608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216840).

139608 is an abundant number, since it is smaller than the sum of its proper divisors (294072).

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

139608 is a wasteful number, since it uses less digits than its factorization.

139608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139608 is about 373.6415394466. The cubic root of 139608 is about 51.8764324373.

It can be divided in two parts, 139 and 608, that added together give a palindrome (747).

The spelling of 139608 in words is "one hundred thirty-nine thousand, six hundred eight".