12440473 has 8 divisors (see below), whose sum is σ = 12907080. Its totient is φ = 11980800.

The previous prime is 12440471. The next prime is 12440479. The reversal of 12440473 is 37404421.

It can be written as a sum of positive squares in 4 ways, for example, as 7118224 + 5322249 = 2668^2 + 2307^2 .

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 12440473 - 2¹ = 12440471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12440471) 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, 2073 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (1613385).

Almost surely, 2^12440473 is an apocalyptic number.

It is an amenable number.

12440473 is a deficient number, since it is larger than the sum of its proper divisors (466607).

12440473 is a wasteful number, since it uses less digits than its factorization.

12440473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 12440473 is about 3527.1054704956. The cubic root of 12440473 is about 231.7104555243.

Adding to 12440473 its reverse (37404421), we get a palindrome (49844894).

The spelling of 12440473 in words is "twelve million, four hundred forty thousand, four hundred seventy-three".