12635139 has 8 divisors (see below), whose sum is σ = 18378432. Its totient is φ = 7657640.

The previous prime is 12635137. The next prime is 12635159. The reversal of 12635139 is 93153621.

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

It is a cyclic number.

It is not a de Polignac number, because 12635139 - 2¹ = 12635137 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (12635137) 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, 191409 + ... + 191474.

It is an arithmetic number, because the mean of its divisors is an integer number (2297304).

Almost surely, 2^12635139 is an apocalyptic number.

12635139 is a deficient number, since it is larger than the sum of its proper divisors (5743293).

12635139 is a wasteful number, since it uses less digits than its factorization.

12635139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382897.

The product of its digits is 4860, while the sum is 30.

The square root of 12635139 is about 3554.5940696513. The cubic root of 12635139 is about 232.9127919382.

The spelling of 12635139 in words is "twelve million, six hundred thirty-five thousand, one hundred thirty-nine".