139366 has 8 divisors (see below), whose sum is σ = 221400. Its totient is φ = 65568.

The previous prime is 139361. The next prime is 139367. The reversal of 139366 is 663931.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139361) by changing a digit.

139366 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, 2016 + ... + 2083.

It is an arithmetic number, because the mean of its divisors is an integer number (27675).

2¹³⁹³⁶⁶ is an apocalyptic number.

139366 is a deficient number, since it is larger than the sum of its proper divisors (82034).

139366 is a wasteful number, since it uses less digits than its factorization.

139366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118.

The product of its digits is 2916, while the sum is 28.

The square root of 139366 is about 373.3175591906. The cubic root of 139366 is about 51.8464404658.

It can be divided in two parts, 139 and 366, that added together give a palindrome (505).

The spelling of 139366 in words is "one hundred thirty-nine thousand, three hundred sixty-six".