12915117 has 12 divisors (see below), whose sum is σ = 19637280. Its totient is φ = 8156808.

The previous prime is 12915107. The next prime is 12915131. The reversal of 12915117 is 71151921.

It is not a de Polignac number, because 12915117 - 2⁴ = 12915101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12915107) 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 11 ways as a sum of consecutive naturals, for example, 37593 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (1636440).

Almost surely, 2^12915117 is an apocalyptic number.

It is an amenable number.

12915117 is a deficient number, since it is larger than the sum of its proper divisors (6722163).

12915117 is a wasteful number, since it uses less digits than its factorization.

12915117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75552 (or 75549 counting only the distinct ones).

The product of its digits is 630, while the sum is 27.

The square root of 12915117 is about 3593.7608434619. The cubic root of 12915117 is about 234.6205858838.

The spelling of 12915117 in words is "twelve million, nine hundred fifteen thousand, one hundred seventeen".