11443939 has 4 divisors (see below), whose sum is σ = 12324256. Its totient is φ = 10563624.

The previous prime is 11443937. The next prime is 11443967. The reversal of 11443939 is 93934411.

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 11443939 - 2¹ = 11443937 is a prime.

It is a Duffinian number.

11443939 is a modest number, since divided by 3939 gives 1144 as remainder.

It is not an unprimeable number, because it can be changed into a prime (11443931) 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, 440139 + ... + 440164.

It is an arithmetic number, because the mean of its divisors is an integer number (3081064).

Almost surely, 2^11443939 is an apocalyptic number.

11443939 is a deficient number, since it is larger than the sum of its proper divisors (880317).

11443939 is an equidigital number, since it uses as much as digits as its factorization.

11443939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880316.

The product of its digits is 11664, while the sum is 34.

The square root of 11443939 is about 3382.8891498245. The cubic root of 11443939 is about 225.3504924221.

The spelling of 11443939 in words is "eleven million, four hundred forty-three thousand, nine hundred thirty-nine".