12884911 has 4 divisors (see below), whose sum is σ = 13876072. Its totient is φ = 11893752.

The previous prime is 12884891. The next prime is 12884923. The reversal of 12884911 is 11948821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11948821 = 1319 ⋅9059.

It is not a de Polignac number, because 12884911 - 2¹⁵ = 12852143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12884941) 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, 495561 + ... + 495586.

It is an arithmetic number, because the mean of its divisors is an integer number (3469018).

Almost surely, 2^12884911 is an apocalyptic number.

12884911 is a deficient number, since it is larger than the sum of its proper divisors (991161).

12884911 is an equidigital number, since it uses as much as digits as its factorization.

12884911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991160.

The product of its digits is 4608, while the sum is 34.

The square root of 12884911 is about 3589.5558221039. Note that the first 3 decimals coincide. The cubic root of 12884911 is about 234.4375321384.

The spelling of 12884911 in words is "twelve million, eight hundred eighty-four thousand, nine hundred eleven".