12753949 has 4 divisors (see below), whose sum is σ = 13735036. Its totient is φ = 11772864.

The previous prime is 12753947. The next prime is 12754009. The reversal of 12753949 is 94935721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5152900 + 7601049 = 2270^2 + 2757^2 .

It is a cyclic number.

It is not a de Polignac number, because 12753949 - 2¹ = 12753947 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 (12753947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490524 + ... + 490549.

It is an arithmetic number, because the mean of its divisors is an integer number (3433759).

Almost surely, 2^12753949 is an apocalyptic number.

It is an amenable number.

12753949 is a deficient number, since it is larger than the sum of its proper divisors (981087).

12753949 is an equidigital number, since it uses as much as digits as its factorization.

12753949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981086.

The product of its digits is 68040, while the sum is 40.

The square root of 12753949 is about 3571.2671420660. The cubic root of 12753949 is about 233.6405529165.

The spelling of 12753949 in words is "twelve million, seven hundred fifty-three thousand, nine hundred forty-nine".