12440597 has 6 divisors (see below), whose sum is σ = 13471362. Its totient is φ = 11483472.

The previous prime is 12440591. The next prime is 12440629. The reversal of 12440597 is 79504421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7921 + 12432676 = 89^2 + 3526^2 .

It is not a de Polignac number, because 12440597 - 2⁴ = 12440581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440591) 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 5 ways as a sum of consecutive naturals, for example, 36638 + ... + 36975.

It is an arithmetic number, because the mean of its divisors is an integer number (2245227).

Almost surely, 2^12440597 is an apocalyptic number.

It is an amenable number.

12440597 is a deficient number, since it is larger than the sum of its proper divisors (1030765).

12440597 is an equidigital number, since it uses as much as digits as its factorization.

12440597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73639 (or 73626 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12440597 is about 3527.1230486049. The cubic root of 12440597 is about 231.7112253771.

The spelling of 12440597 in words is "twelve million, four hundred forty thousand, five hundred ninety-seven".