139650 has 72 divisors (see below), whose sum is σ = 424080. Its totient is φ = 30240.

The previous prime is 139627. The next prime is 139661. The reversal of 139650 is 56931.

It is a self number, because there is not a number n which added to its sum of digits gives 139650.

It is an unprimeable number.

139650 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 35 ways as a sum of consecutive naturals, for example, 7341 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (5890).

2¹³⁹⁶⁵⁰ is an apocalyptic number.

139650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212040).

139650 is an abundant number, since it is smaller than the sum of its proper divisors (284430).

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

139650 is a wasteful number, since it uses less digits than its factorization.

139650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 139650 is about 373.6977388211. The cubic root of 139650 is about 51.8816341252.

The spelling of 139650 in words is "one hundred thirty-nine thousand, six hundred fifty".