12984981 has 4 divisors (see below), whose sum is σ = 17313312. Its totient is φ = 8656652.

The previous prime is 12984973. The next prime is 12984989. The reversal of 12984981 is 18948921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (12984973) and next prime (12984989).

It is a cyclic number.

It is not a de Polignac number, because 12984981 - 2³ = 12984973 is a prime.

It is a super-2 number, since 2×12984981² = 337219463140722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12984989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164161 + ... + 2164166.

It is an arithmetic number, because the mean of its divisors is an integer number (4328328).

Almost surely, 2^12984981 is an apocalyptic number.

It is an amenable number.

12984981 is a deficient number, since it is larger than the sum of its proper divisors (4328331).

12984981 is an equidigital number, since it uses as much as digits as its factorization.

12984981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328330.

The product of its digits is 41472, while the sum is 42.

The square root of 12984981 is about 3603.4679129971. The cubic root of 12984981 is about 235.0428833767.

The spelling of 12984981 in words is "twelve million, nine hundred eighty-four thousand, nine hundred eighty-one".