12917901 has 4 divisors (see below), whose sum is σ = 17223872. Its totient is φ = 8611932.

The previous prime is 12917833. The next prime is 12917939. The reversal of 12917901 is 10971921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10971921 = 3 ⋅3657307.

It is not a de Polignac number, because 12917901 - 2⁹ = 12917389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917981) 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 3 ways as a sum of consecutive naturals, for example, 2152981 + ... + 2152986.

It is an arithmetic number, because the mean of its divisors is an integer number (4305968).

Almost surely, 2^12917901 is an apocalyptic number.

It is an amenable number.

12917901 is a deficient number, since it is larger than the sum of its proper divisors (4305971).

12917901 is an equidigital number, since it uses as much as digits as its factorization.

12917901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305970.

The product of its (nonzero) digits is 1134, while the sum is 30.

The square root of 12917901 is about 3594.1481605521. The cubic root of 12917901 is about 234.6374430490.

The spelling of 12917901 in words is "twelve million, nine hundred seventeen thousand, nine hundred one".