11783965 has 4 divisors (see below), whose sum is σ = 14140764. Its totient is φ = 9427168.

The previous prime is 11783957. The next prime is 11783969. The reversal of 11783965 is 56938711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1505529 + 10278436 = 1227^2 + 3206^2 .

It is a cyclic number.

It is not a de Polignac number, because 11783965 - 2³ = 11783957 is a prime.

It is a super-2 number, since 2×11783965² = 277723662242450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11783969) 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, 1178392 + ... + 1178401.

It is an arithmetic number, because the mean of its divisors is an integer number (3535191).

Almost surely, 2^11783965 is an apocalyptic number.

It is an amenable number.

11783965 is a deficient number, since it is larger than the sum of its proper divisors (2356799).

11783965 is an equidigital number, since it uses as much as digits as its factorization.

11783965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356798.

The product of its digits is 45360, while the sum is 40.

The square root of 11783965 is about 3432.7780295265. The cubic root of 11783965 is about 227.5606407601.

The spelling of 11783965 in words is "eleven million, seven hundred eighty-three thousand, nine hundred sixty-five".