11559943 has 4 divisors (see below), whose sum is σ = 11689920. Its totient is φ = 11429968.

The previous prime is 11559941. The next prime is 11559953. The reversal of 11559943 is 34995511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34995511 = 19 ⋅1841869.

It is a cyclic number.

It is not a de Polignac number, because 11559943 - 2¹ = 11559941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11559941) 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, 64855 + ... + 65032.

It is an arithmetic number, because the mean of its divisors is an integer number (2922480).

Almost surely, 2^11559943 is an apocalyptic number.

11559943 is a deficient number, since it is larger than the sum of its proper divisors (129977).

11559943 is an equidigital number, since it uses as much as digits as its factorization.

11559943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129976.

The product of its digits is 24300, while the sum is 37.

The square root of 11559943 is about 3399.9916176367. The cubic root of 11559943 is about 226.1093722313.

The spelling of 11559943 in words is "eleven million, five hundred fifty-nine thousand, nine hundred forty-three".