12655139 has 8 divisors (see below), whose sum is σ = 14496000. Its totient is φ = 10822536.

The previous prime is 12655127. The next prime is 12655141. The reversal of 12655139 is 93155621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12655139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12655039) 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, 1682 + ... + 5304.

It is an arithmetic number, because the mean of its divisors is an integer number (1812000).

Almost surely, 2^12655139 is an apocalyptic number.

12655139 is a deficient number, since it is larger than the sum of its proper divisors (1840861).

12655139 is an equidigital number, since it uses as much as digits as its factorization.

12655139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129.

The product of its digits is 8100, while the sum is 32.

The square root of 12655139 is about 3557.4062180190. The cubic root of 12655139 is about 233.0356187143.

The spelling of 12655139 in words is "twelve million, six hundred fifty-five thousand, one hundred thirty-nine".