12440011 has 4 divisors (see below), whose sum is σ = 12530952. Its totient is φ = 12349072.

The previous prime is 12440009. The next prime is 12440017. The reversal of 12440011 is 11004421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11004421 = 389 ⋅28289.

It is a cyclic number.

It is not a de Polignac number, because 12440011 - 2¹ = 12440009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12439973 and 12440000.

It is not an unprimeable number, because it can be changed into a prime (12440017) 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, 45265 + ... + 45538.

It is an arithmetic number, because the mean of its divisors is an integer number (3132738).

Almost surely, 2^12440011 is an apocalyptic number.

12440011 is a deficient number, since it is larger than the sum of its proper divisors (90941).

12440011 is an equidigital number, since it uses as much as digits as its factorization.

12440011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90940.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12440011 is about 3527.0399770913. The cubic root of 12440011 is about 231.7075871565.

Adding to 12440011 its reverse (11004421), we get a palindrome (23444432).

The spelling of 12440011 in words is "twelve million, four hundred forty thousand, eleven".