1224132909 has 4 divisors (see below), whose sum is σ = 1632177216. Its totient is φ = 816088604.

The previous prime is 1224132883. The next prime is 1224132911. The reversal of 1224132909 is 9092314221.

1224132909 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 1224132909 - 2⁸ = 1224132653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1224132909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224132989) 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, 204022149 + ... + 204022154.

It is an arithmetic number, because the mean of its divisors is an integer number (408044304).

Almost surely, 2^1224132909 is an apocalyptic number.

It is an amenable number.

1224132909 is a deficient number, since it is larger than the sum of its proper divisors (408044307).

1224132909 is an equidigital number, since it uses as much as digits as its factorization.

1224132909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408044306.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1224132909 is about 34987.6107929650. The cubic root of 1224132909 is about 1069.7349647819.

It can be divided in two parts, 12241 and 32909, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 1224132909 in words is "one billion, two hundred twenty-four million, one hundred thirty-two thousand, nine hundred nine".