11409943 has 4 divisors (see below), whose sum is σ = 11425888. Its totient is φ = 11394000.

The previous prime is 11409929. The next prime is 11409947. The reversal of 11409943 is 34990411.

11409943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11409943 - 2⁵ = 11409911 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 (11409947) 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, 6846 + ... + 8347.

It is an arithmetic number, because the mean of its divisors is an integer number (2856472).

Almost surely, 2^11409943 is an apocalyptic number.

11409943 is a deficient number, since it is larger than the sum of its proper divisors (15945).

11409943 is an equidigital number, since it uses as much as digits as its factorization.

11409943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15944.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 11409943 is about 3377.8607135286. The cubic root of 11409943 is about 225.1271248688.

The spelling of 11409943 in words is "eleven million, four hundred nine thousand, nine hundred forty-three".