12544749 has 24 divisors (see below), whose sum is σ = 20846592. Its totient is φ = 7120800.

The previous prime is 12544747. The next prime is 12544751. The reversal of 12544749 is 94744521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12544747) and next prime (12544751).

It is not a de Polignac number, because 12544749 - 2¹ = 12544747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12544747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10324 + ... + 11474.

It is an arithmetic number, because the mean of its divisors is an integer number (868608).

Almost surely, 2^12544749 is an apocalyptic number.

It is an amenable number.

12544749 is a deficient number, since it is larger than the sum of its proper divisors (8301843).

12544749 is a wasteful number, since it uses less digits than its factorization.

12544749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1334 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12544749 is about 3541.8567164695. The cubic root of 12544749 is about 232.3560538046.

The spelling of 12544749 in words is "twelve million, five hundred forty-four thousand, seven hundred forty-nine".