12744394 has 8 divisors (see below), whose sum is σ = 20587140. Its totient is φ = 5882016.

The previous prime is 12744377. The next prime is 12744397. The reversal of 12744394 is 49344721.

It is a happy number.

12744394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12341169 + 403225 = 3513^2 + 635^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12744397) 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, 245059 + ... + 245110.

Almost surely, 2^12744394 is an apocalyptic number.

12744394 is a deficient number, since it is larger than the sum of its proper divisors (7842746).

12744394 is a wasteful number, since it uses less digits than its factorization.

12744394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490184.

The product of its digits is 24192, while the sum is 34.

The square root of 12744394 is about 3569.9291309492. The cubic root of 12744394 is about 233.5821920848.

It can be divided in two parts, 1274 and 4394, that multiplied together give a square (5597956 = 2366²).

The spelling of 12744394 in words is "twelve million, seven hundred forty-four thousand, three hundred ninety-four".