12139086 has 16 divisors (see below), whose sum is σ = 24338304. Its totient is φ = 4036344.

The previous prime is 12139051. The next prime is 12139103. The reversal of 12139086 is 68093121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (1521144).

Almost surely, 2^12139086 is an apocalyptic number.

12139086 is an abundant number, since it is smaller than the sum of its proper divisors (12199218).

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

12139086 is a wasteful number, since it uses less digits than its factorization.

12139086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 12139086 is about 3484.1191139225. The cubic root of 12139086 is about 229.8239736964.

The spelling of 12139086 in words is "twelve million, one hundred thirty-nine thousand, eighty-six".