12894481 has 4 divisors (see below), whose sum is σ = 13310464. Its totient is φ = 12478500.

The previous prime is 12894457. The next prime is 12894487. The reversal of 12894481 is 18449821.

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 a cyclic number.

It is not a de Polignac number, because 12894481 - 2⁷ = 12894353 is a prime.

It is a super-2 number, since 2×12894481² = 332535280518722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12894481.

It is not an unprimeable number, because it can be changed into a prime (12894487) 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, 207945 + ... + 208006.

It is an arithmetic number, because the mean of its divisors is an integer number (3327616).

Almost surely, 2^12894481 is an apocalyptic number.

It is an amenable number.

12894481 is a deficient number, since it is larger than the sum of its proper divisors (415983).

12894481 is an equidigital number, since it uses as much as digits as its factorization.

12894481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415982.

The product of its digits is 18432, while the sum is 37.

The square root of 12894481 is about 3590.8886086873. Note that the first 3 decimals coincide. The cubic root of 12894481 is about 234.4955589771.

The spelling of 12894481 in words is "twelve million, eight hundred ninety-four thousand, four hundred eighty-one".