12440451 has 8 divisors (see below), whose sum is σ = 16606480. Its totient is φ = 8284032.

The previous prime is 12440431. The next prime is 12440453. The reversal of 12440451 is 15404421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12440451 - 2¹¹ = 12438403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551 + ... + 5223.

It is an arithmetic number, because the mean of its divisors is an integer number (2075810).

Almost surely, 2^12440451 is an apocalyptic number.

12440451 is a deficient number, since it is larger than the sum of its proper divisors (4166029).

12440451 is a wasteful number, since it uses less digits than its factorization.

12440451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 12440451 is about 3527.1023517896. The cubic root of 12440451 is about 231.7103189369.

Adding to 12440451 its reverse (15404421), we get a palindrome (27844872).

The spelling of 12440451 in words is "twelve million, four hundred forty thousand, four hundred fifty-one".