12440271 has 8 divisors (see below), whose sum is σ = 16751664. Its totient is φ = 8211200.

The previous prime is 12440249. The next prime is 12440273. The reversal of 12440271 is 17204421.

It is a happy number.

12440271 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12440271 - 2⁷ = 12440143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440273) 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, 20226 + ... + 20831.

It is an arithmetic number, because the mean of its divisors is an integer number (2093958).

Almost surely, 2^12440271 is an apocalyptic number.

12440271 is a deficient number, since it is larger than the sum of its proper divisors (4311393).

12440271 is a wasteful number, since it uses less digits than its factorization.

12440271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41161.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12440271 is about 3527.0768350009. The cubic root of 12440271 is about 231.7092013982.

Adding to 12440271 its reverse (17204421), we get a palindrome (29644692).

The spelling of 12440271 in words is "twelve million, four hundred forty thousand, two hundred seventy-one".