11784622249 has 3 divisors (see below), whose sum is σ = 11784730807. Its totient is φ = 11784513692.

The previous prime is 11784622231. The next prime is 11784622253. The reversal of 11784622249 is 94222648711.

The square root of 11784622249 is 108557.

It is a perfect power (a square), and thus also a powerful number.

11784622249 is digitally balanced in base 2, 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94222648711 = 31 ⋅3039440281.

It can be written as a sum of positive squares in only one way, i.e., 5277296025 + 6507326224 = 72645^2 + 80668^2 .

It is not a de Polignac number, because 11784622249 - 2²⁵ = 11751067817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11784622199 and 11784622208.

It is not an unprimeable number, because it can be changed into a prime (11784622219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54279 + ... + 162835.

Almost surely, 2^11784622249 is an apocalyptic number.

11784622249 is the 108557-th square number.

11784622249 is the 54279-th centered octagonal number.

It is an amenable number.

11784622249 is a deficient number, since it is larger than the sum of its proper divisors (108558).

11784622249 is an frugal number, since it uses more digits than its factorization.

11784622249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217114 (or 108557 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The spelling of 11784622249 in words is "eleven billion, seven hundred eighty-four million, six hundred twenty-two thousand, two hundred forty-nine".