12916749 has 4 divisors (see below), whose sum is σ = 17222336. Its totient is φ = 8611164.

The previous prime is 12916747. The next prime is 12916807. The reversal of 12916749 is 94761921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12916749 - 2¹ = 12916747 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 (12916741) 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, 2152789 + ... + 2152794.

It is an arithmetic number, because the mean of its divisors is an integer number (4305584).

Almost surely, 2^12916749 is an apocalyptic number.

It is an amenable number.

12916749 is a deficient number, since it is larger than the sum of its proper divisors (4305587).

12916749 is an equidigital number, since it uses as much as digits as its factorization.

12916749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305586.

The product of its digits is 27216, while the sum is 39.

The square root of 12916749 is about 3593.9878964738. The cubic root of 12916749 is about 234.6304679640.

The spelling of 12916749 in words is "twelve million, nine hundred sixteen thousand, seven hundred forty-nine".