139386 has 16 divisors (see below), whose sum is σ = 300384. Its totient is φ = 42864.

The previous prime is 139369. The next prime is 139387. The reversal of 139386 is 683931.

It is a super-3 number, since 3×139386³ = 8124164720533368, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (139387) by changing a digit.

139386 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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (18774).

2¹³⁹³⁸⁶ is an apocalyptic number.

139386 is an abundant number, since it is smaller than the sum of its proper divisors (160998).

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

139386 is a wasteful number, since it uses less digits than its factorization.

139386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805.

The product of its digits is 3888, while the sum is 30.

The square root of 139386 is about 373.3443450757. The cubic root of 139386 is about 51.8489204566.

It can be divided in two parts, 139 and 386, that added together give a palindrome (525).

The spelling of 139386 in words is "one hundred thirty-nine thousand, three hundred eighty-six".