12989217 has 16 divisors (see below), whose sum is σ = 18821120. Its totient is φ = 7938000.

The previous prime is 12989209. The next prime is 12989219. The reversal of 12989217 is 71298921.

It is not a de Polignac number, because 12989217 - 2³ = 12989209 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12989219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1909 + ... + 5442.

It is an arithmetic number, because the mean of its divisors is an integer number (1176320).

Almost surely, 2^12989217 is an apocalyptic number.

It is an amenable number.

12989217 is a deficient number, since it is larger than the sum of its proper divisors (5831903).

12989217 is a wasteful number, since it uses less digits than its factorization.

12989217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404.

The product of its digits is 18144, while the sum is 39.

The square root of 12989217 is about 3604.0556322010. The cubic root of 12989217 is about 235.0684393994.

The spelling of 12989217 in words is "twelve million, nine hundred eighty-nine thousand, two hundred seventeen".