11963809 has 8 divisors (see below), whose sum is σ = 14055552. Its totient is φ = 10039440.

The previous prime is 11963807. The next prime is 11963821. The reversal of 11963809 is 90836911.

11963809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11963809 - 2¹ = 11963807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11963807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41689 + ... + 41974.

It is an arithmetic number, because the mean of its divisors is an integer number (1756944).

Almost surely, 2^11963809 is an apocalyptic number.

It is an amenable number.

11963809 is a deficient number, since it is larger than the sum of its proper divisors (2091743).

11963809 is a wasteful number, since it uses less digits than its factorization.

11963809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83687.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 11963809 is about 3458.8739497125. The cubic root of 11963809 is about 228.7124592261.

It can be divided in two parts, 1196 and 3809, that added together give a palindrome (5005).

The spelling of 11963809 in words is "eleven million, nine hundred sixty-three thousand, eight hundred nine".