11783945 has 8 divisors (see below), whose sum is σ = 14523144. Its totient is φ = 9172224.

The previous prime is 11783929. The next prime is 11783951. The reversal of 11783945 is 54938711.

It can be written as a sum of positive squares in 4 ways, for example, as 781456 + 11002489 = 884^2 + 3317^2 .

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 11783945 - 2⁴ = 11783929 is a prime.

It is a super-2 number, since 2×11783945² = 277722719526050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11783899 and 11783908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31664 + ... + 32033.

It is an arithmetic number, because the mean of its divisors is an integer number (1815393).

Almost surely, 2^11783945 is an apocalyptic number.

It is an amenable number.

11783945 is a deficient number, since it is larger than the sum of its proper divisors (2739199).

11783945 is an equidigital number, since it uses as much as digits as its factorization.

11783945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63739.

The product of its digits is 30240, while the sum is 38.

The square root of 11783945 is about 3432.7751164328. The cubic root of 11783945 is about 227.5605120197.

The spelling of 11783945 in words is "eleven million, seven hundred eighty-three thousand, nine hundred forty-five".