12440033 has 4 divisors (see below), whose sum is σ = 12980928. Its totient is φ = 11899140.

The previous prime is 12440027. The next prime is 12440053. The reversal of 12440033 is 33004421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12440033 - 2⁴ = 12440017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12439993 and 12440020.

It is not an unprimeable number, because it can be changed into a prime (12440053) 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, 270413 + ... + 270458.

It is an arithmetic number, because the mean of its divisors is an integer number (3245232).

Almost surely, 2^12440033 is an apocalyptic number.

It is an amenable number.

12440033 is a deficient number, since it is larger than the sum of its proper divisors (540895).

12440033 is an equidigital number, since it uses as much as digits as its factorization.

12440033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540894.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12440033 is about 3527.0430958524. The cubic root of 12440033 is about 231.7077237471.

Adding to 12440033 its reverse (33004421), we get a palindrome (45444454).

The spelling of 12440033 in words is "twelve million, four hundred forty thousand, thirty-three".