12917983 has 8 divisors (see below), whose sum is σ = 13952288. Its totient is φ = 11889504.

The previous prime is 12917981. The next prime is 12917987. The reversal of 12917983 is 38971921.

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 12917983 - 2¹ = 12917981 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3910 + ... + 6412.

It is an arithmetic number, because the mean of its divisors is an integer number (1744036).

Almost surely, 2^12917983 is an apocalyptic number.

12917983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12917983 is a deficient number, since it is larger than the sum of its proper divisors (1034305).

12917983 is a wasteful number, since it uses less digits than its factorization.

12917983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913.

The product of its digits is 27216, while the sum is 40.

The square root of 12917983 is about 3594.1595679658. The cubic root of 12917983 is about 234.6379395236.

The spelling of 12917983 in words is "twelve million, nine hundred seventeen thousand, nine hundred eighty-three".