12440761 has 4 divisors (see below), whose sum is σ = 12626512. Its totient is φ = 12255012.

The previous prime is 12440741. The next prime is 12440809. The reversal of 12440761 is 16704421.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16704421 = 17 ⋅982613.

It is a cyclic number.

It is not a de Polignac number, because 12440761 - 2⁹ = 12440249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440711) 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, 92775 + ... + 92908.

It is an arithmetic number, because the mean of its divisors is an integer number (3156628).

Almost surely, 2^12440761 is an apocalyptic number.

It is an amenable number.

12440761 is a deficient number, since it is larger than the sum of its proper divisors (185751).

12440761 is an equidigital number, since it uses as much as digits as its factorization.

12440761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185750.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 12440761 is about 3527.1462969375. The cubic root of 12440761 is about 231.7122435618.

The spelling of 12440761 in words is "twelve million, four hundred forty thousand, seven hundred sixty-one".