139350186 has 32 divisors (see below), whose sum is σ = 316873920. Its totient is φ = 45369072.

The previous prime is 139350181. The next prime is 139350187. The reversal of 139350186 is 681053931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 139350186.

It is not an unprimeable number, because it can be changed into a prime (139350181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27685 + ... + 32328.

It is an arithmetic number, because the mean of its divisors is an integer number (9902310).

Almost surely, 2^139350186 is an apocalyptic number.

139350186 is an abundant number, since it is smaller than the sum of its proper divisors (177523734).

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

139350186 is a wasteful number, since it uses less digits than its factorization.

139350186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60067 (or 60061 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 139350186 is about 11804.6679750004. The cubic root of 139350186 is about 518.4447936902. Note that the first 3 decimals are identical.

The spelling of 139350186 in words is "one hundred thirty-nine million, three hundred fifty thousand, one hundred eighty-six".