12340917 has 20 divisors (see below), whose sum is σ = 18539136. Its totient is φ = 8181000.

The previous prime is 12340907. The next prime is 12340919. The reversal of 12340917 is 71904321.

It is not a de Polignac number, because 12340917 - 2⁴ = 12340901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340919) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20028 + ... + 20634.

Almost surely, 2^12340917 is an apocalyptic number.

It is an amenable number.

12340917 is a deficient number, since it is larger than the sum of its proper divisors (6198219).

12340917 is an equidigital number, since it uses as much as digits as its factorization.

12340917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12340917 is about 3512.9641330364. The cubic root of 12340917 is about 231.0907048075.

The spelling of 12340917 in words is "twelve million, three hundred forty thousand, nine hundred seventeen".