138486 has 8 divisors (see below), whose sum is σ = 276984. Its totient is φ = 46160.

The previous prime is 138469. The next prime is 138493. The reversal of 138486 is 684831.

It is a happy number.

138486 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

138486 is an admirable number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 3¹⁰ + 4 + 8 + 8⁵ + 6⁶ .

It is a congruent number.

It is an unprimeable number.

138486 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11535 + ... + 11546.

It is an arithmetic number, because the mean of its divisors is an integer number (34623).

2¹³⁸⁴⁸⁶ is an apocalyptic number.

138486 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138486 is a wasteful number, since it uses less digits than its factorization.

138486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23086.

The product of its digits is 4608, while the sum is 30.

The square root of 138486 is about 372.1370715207. The cubic root of 138486 is about 51.7370851573.

The spelling of 138486 in words is "one hundred thirty-eight thousand, four hundred eighty-six".