12749416 has 16 divisors (see below), whose sum is σ = 23963940. Its totient is φ = 6359040.

The previous prime is 12749413. The next prime is 12749417. The reversal of 12749416 is 61494721.

It can be written as a sum of positive squares in 2 ways, for example, as 10588516 + 2160900 = 3254^2 + 1470^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12749413) 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, 1960 + ... + 5416.

Almost surely, 2^12749416 is an apocalyptic number.

It is an amenable number.

12749416 is a deficient number, since it is larger than the sum of its proper divisors (11214524).

12749416 is a wasteful number, since it uses less digits than its factorization.

12749416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924 (or 3920 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 12749416 is about 3570.6324369781. The cubic root of 12749416 is about 233.6128695137.

The spelling of 12749416 in words is "twelve million, seven hundred forty-nine thousand, four hundred sixteen".