11440047 has 4 divisors (see below), whose sum is σ = 15253400. Its totient is φ = 7626696.

The previous prime is 11440027. The next prime is 11440057. The reversal of 11440047 is 74004411.

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

It is not a de Polignac number, because 11440047 - 2¹¹ = 11437999 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 (11440027) 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, 1906672 + ... + 1906677.

It is an arithmetic number, because the mean of its divisors is an integer number (3813350).

Almost surely, 2^11440047 is an apocalyptic number.

11440047 is a deficient number, since it is larger than the sum of its proper divisors (3813353).

11440047 is an equidigital number, since it uses as much as digits as its factorization.

11440047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813352.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 11440047 is about 3382.3138529711. The cubic root of 11440047 is about 225.3249428404.

Adding to 11440047 its reverse (74004411), we get a palindrome (85444458).

The spelling of 11440047 in words is "eleven million, four hundred forty thousand, forty-seven".