12440433 has 4 divisors (see below), whose sum is σ = 16587248. Its totient is φ = 8293620.

The previous prime is 12440431. The next prime is 12440453. The reversal of 12440433 is 33404421.

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 not a de Polignac number, because 12440433 - 2¹ = 12440431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440431) 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, 2073403 + ... + 2073408.

It is an arithmetic number, because the mean of its divisors is an integer number (4146812).

Almost surely, 2^12440433 is an apocalyptic number.

It is an amenable number.

12440433 is a deficient number, since it is larger than the sum of its proper divisors (4146815).

12440433 is an equidigital number, since it uses as much as digits as its factorization.

12440433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146814.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 12440433 is about 3527.0998001191. The cubic root of 12440433 is about 231.7102071836.

Adding to 12440433 its reverse (33404421), we get a palindrome (45844854).

The spelling of 12440433 in words is "twelve million, four hundred forty thousand, four hundred thirty-three".