12440737 has 4 divisors (see below), whose sum is σ = 12453120. Its totient is φ = 12428356.

The previous prime is 12440711. The next prime is 12440741. The reversal of 12440737 is 73704421.

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 12440737 - 2¹⁹ = 11916449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12440137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4537 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (3113280).

Almost surely, 2^12440737 is an apocalyptic number.

It is an amenable number.

12440737 is a deficient number, since it is larger than the sum of its proper divisors (12383).

12440737 is a wasteful number, since it uses less digits than its factorization.

12440737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12382.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 12440737 is about 3527.1428947521. The cubic root of 12440737 is about 231.7120945597.

The spelling of 12440737 in words is "twelve million, four hundred forty thousand, seven hundred thirty-seven".