12139611 has 8 divisors (see below), whose sum is σ = 17657664. Its totient is φ = 7357320.

The previous prime is 12139609. The next prime is 12139619. The reversal of 12139611 is 11693121.

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

It is not a de Polignac number, because 12139611 - 2¹ = 12139609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12139619) 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, 183901 + ... + 183966.

It is an arithmetic number, because the mean of its divisors is an integer number (2207208).

Almost surely, 2^12139611 is an apocalyptic number.

12139611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12139611 is a deficient number, since it is larger than the sum of its proper divisors (5518053).

12139611 is a wasteful number, since it uses less digits than its factorization.

12139611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367881.

The product of its digits is 324, while the sum is 24.

The square root of 12139611 is about 3484.1944549637. The cubic root of 12139611 is about 229.8272868467.

The spelling of 12139611 in words is "twelve million, one hundred thirty-nine thousand, six hundred eleven".