12984321 has 8 divisors (see below), whose sum is σ = 19785664. Its totient is φ = 7419600.

The previous prime is 12984289. The next prime is 12984329. The reversal of 12984321 is 12348921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12984321 - 2⁵ = 12984289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12984329) 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, 309130 + ... + 309171.

It is an arithmetic number, because the mean of its divisors is an integer number (2473208).

It is a Proth number, since it is equal to 1585 ⋅ 2¹³ + 1 and 1585 < 2¹³.

Almost surely, 2^12984321 is an apocalyptic number.

It is an amenable number.

12984321 is a deficient number, since it is larger than the sum of its proper divisors (6801343).

12984321 is an equidigital number, since it uses as much as digits as its factorization.

12984321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618311.

The product of its digits is 3456, while the sum is 30.

The square root of 12984321 is about 3603.3763333851. The cubic root of 12984321 is about 235.0389010597.

The spelling of 12984321 in words is "twelve million, nine hundred eighty-four thousand, three hundred twenty-one".