11940005 has 16 divisors (see below), whose sum is σ = 17864064. Its totient is φ = 7442880.

The previous prime is 11939959. The next prime is 11940017. The reversal of 11940005 is 50004911.

It is not a de Polignac number, because 11940005 - 2⁸ = 11939749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15122 + ... + 15891.

It is an arithmetic number, because the mean of its divisors is an integer number (1116504).

Almost surely, 2^11940005 is an apocalyptic number.

It is an amenable number.

11940005 is a deficient number, since it is larger than the sum of its proper divisors (5924059).

11940005 is a wasteful number, since it uses less digits than its factorization.

11940005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31036.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 11940005 is about 3455.4312321330. The cubic root of 11940005 is about 228.5606712757.

Adding to 11940005 its reverse (50004911), we get a palindrome (61944916).

The spelling of 11940005 in words is "eleven million, nine hundred forty thousand, five".