12915403 has 2 divisors, whose sum is σ = 12915404. Its totient is φ = 12915402.

The previous prime is 12915391. The next prime is 12915433. The reversal of 12915403 is 30451921.

It is a weak prime.

It is an emirp because it is prime and its reverse (30451921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12915403 is a prime.

It is not a weakly prime, because it can be changed into another prime (12915433) 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 as a sum of consecutive naturals, namely, 6457701 + 6457702.

It is an arithmetic number, because the mean of its divisors is an integer number (6457702).

Almost surely, 2^12915403 is an apocalyptic number.

12915403 is a deficient number, since it is larger than the sum of its proper divisors (1).

12915403 is an equidigital number, since it uses as much as digits as its factorization.

12915403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12915403 is about 3593.8006344259. The cubic root of 12915403 is about 234.6223177301.

The spelling of 12915403 in words is "twelve million, nine hundred fifteen thousand, four hundred three".