12984919 has 4 divisors (see below), whose sum is σ = 13019560. Its totient is φ = 12950280.

The previous prime is 12984913. The next prime is 12984931. The reversal of 12984919 is 91948921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12984919 - 2⁷ = 12984791 is a prime.

It is a super-2 number, since 2×12984919² = 337216242873122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12984913) 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, 16752 + ... + 17509.

It is an arithmetic number, because the mean of its divisors is an integer number (3254890).

Almost surely, 2^12984919 is an apocalyptic number.

12984919 is a deficient number, since it is larger than the sum of its proper divisors (34641).

12984919 is an equidigital number, since it uses as much as digits as its factorization.

12984919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34640.

The product of its digits is 46656, while the sum is 43.

The square root of 12984919 is about 3603.4593101629. The cubic root of 12984919 is about 235.0425092860.

The spelling of 12984919 in words is "twelve million, nine hundred eighty-four thousand, nine hundred nineteen".