12988749 has 8 divisors (see below), whose sum is σ = 17513280. Its totient is φ = 8561696.

The previous prime is 12988747. The next prime is 12988757. The reversal of 12988749 is 94788921.

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

It is a cyclic number.

It is not a de Polignac number, because 12988749 - 2¹ = 12988747 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12988698 and 12988707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12988747) 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 7 ways as a sum of consecutive naturals, for example, 24057 + ... + 24590.

It is an arithmetic number, because the mean of its divisors is an integer number (2189160).

Almost surely, 2^12988749 is an apocalyptic number.

It is an amenable number.

12988749 is a deficient number, since it is larger than the sum of its proper divisors (4524531).

12988749 is an equidigital number, since it uses as much as digits as its factorization.

12988749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48739.

The product of its digits is 290304, while the sum is 48.

The square root of 12988749 is about 3603.9907047605. The cubic root of 12988749 is about 235.0656162025.

The spelling of 12988749 in words is "twelve million, nine hundred eighty-eight thousand, seven hundred forty-nine".