1196644409 has 4 divisors (see below), whose sum is σ = 1225830900. Its totient is φ = 1167457920.

The previous prime is 1196644387. The next prime is 1196644411. The reversal of 1196644409 is 9044466911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9044466911 = 73 ⋅123896807.

It can be written as a sum of positive squares in 2 ways, for example, as 411075625 + 785568784 = 20275^2 + 28028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1196644409 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 1196644409.

It is not an unprimeable number, because it can be changed into a prime (1196644499) 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, 14593184 + ... + 14593265.

It is an arithmetic number, because the mean of its divisors is an integer number (306457725).

Almost surely, 2^1196644409 is an apocalyptic number.

It is an amenable number.

1196644409 is a deficient number, since it is larger than the sum of its proper divisors (29186491).

1196644409 is an equidigital number, since it uses as much as digits as its factorization.

1196644409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29186490.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1196644409 is about 34592.5484606150. The cubic root of 1196644409 is about 1061.6671312767.

The spelling of 1196644409 in words is "one billion, one hundred ninety-six million, six hundred forty-four thousand, four hundred nine".