12884401 has 4 divisors (see below), whose sum is σ = 12891892. Its totient is φ = 12876912.

The previous prime is 12884387. The next prime is 12884411. The reversal of 12884401 is 10448821.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10448821 = 157 ⋅66553.

It can be written as a sum of positive squares in 2 ways, for example, as 4004001 + 8880400 = 2001^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884401 - 2⁵ = 12884369 is a prime.

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 12884401.

It is not an unprimeable number, because it can be changed into a prime (12884411) 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, 271 + ... + 5083.

It is an arithmetic number, because the mean of its divisors is an integer number (3222973).

Almost surely, 2^12884401 is an apocalyptic number.

It is an amenable number.

12884401 is a deficient number, since it is larger than the sum of its proper divisors (7491).

12884401 is an equidigital number, since it uses as much as digits as its factorization.

12884401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7490.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 12884401 is about 3589.4847819708. The cubic root of 12884401 is about 234.4344389928.

The spelling of 12884401 in words is "twelve million, eight hundred eighty-four thousand, four hundred one".