12899227 has 4 divisors (see below), whose sum is σ = 14071896. Its totient is φ = 11726560.

The previous prime is 12899221. The next prime is 12899231. The reversal of 12899227 is 72299821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72299821 = 11 ⋅6572711.

It is a cyclic number.

It is not a de Polignac number, because 12899227 - 2⁷ = 12899099 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 12899227.

It is not an unprimeable number, because it can be changed into a prime (12899221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586318 + ... + 586339.

It is an arithmetic number, because the mean of its divisors is an integer number (3517974).

Almost surely, 2^12899227 is an apocalyptic number.

12899227 is a deficient number, since it is larger than the sum of its proper divisors (1172669).

12899227 is a wasteful number, since it uses less digits than its factorization.

12899227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172668.

The product of its digits is 36288, while the sum is 40.

The square root of 12899227 is about 3591.5493871030. The cubic root of 12899227 is about 234.5243252741.

The spelling of 12899227 in words is "twelve million, eight hundred ninety-nine thousand, two hundred twenty-seven".