11240447 has 4 divisors (see below), whose sum is σ = 11264016. Its totient is φ = 11216880.

The previous prime is 11240423. The next prime is 11240483. The reversal of 11240447 is 74404211.

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: 74404211 = 7 ⋅10629173.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11240447 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 (11240347) 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, 11054 + ... + 12027.

It is an arithmetic number, because the mean of its divisors is an integer number (2816004).

Almost surely, 2^11240447 is an apocalyptic number.

11240447 is a deficient number, since it is larger than the sum of its proper divisors (23569).

11240447 is an equidigital number, since it uses as much as digits as its factorization.

11240447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 11240447 is about 3352.6775866462. The cubic root of 11240447 is about 224.0067958716.

Adding to 11240447 its reverse (74404211), we get a palindrome (85644658).

The spelling of 11240447 in words is "eleven million, two hundred forty thousand, four hundred forty-seven".