139188 has 24 divisors (see below), whose sum is σ = 371392. Its totient is φ = 39744.

The previous prime is 139187. The next prime is 139199. The reversal of 139188 is 881931.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139188.

It is not an unprimeable number, because it can be changed into a prime (139187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745 + ... + 912.

2¹³⁹¹⁸⁸ is an apocalyptic number.

It is an amenable number.

139188 is an abundant number, since it is smaller than the sum of its proper divisors (232204).

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

139188 is a wasteful number, since it uses less digits than its factorization.

139188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1669 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 139188 is about 373.0790800889. The cubic root of 139188 is about 51.8243580875.

The spelling of 139188 in words is "one hundred thirty-nine thousand, one hundred eighty-eight".