12749799 has 8 divisors (see below), whose sum is σ = 17159040. Its totient is φ = 8420216.

The previous prime is 12749783. The next prime is 12749827. The reversal of 12749799 is 99794721.

It is a happy number.

12749799 is nontrivially palindromic in base 11.

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 12749799 - 2⁴ = 12749783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19539 + ... + 20180.

It is an arithmetic number, because the mean of its divisors is an integer number (2144880).

Almost surely, 2^12749799 is an apocalyptic number.

12749799 is a deficient number, since it is larger than the sum of its proper divisors (4409241).

12749799 is a wasteful number, since it uses less digits than its factorization.

12749799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39829.

The product of its digits is 285768, while the sum is 48.

The square root of 12749799 is about 3570.6860685308. The cubic root of 12749799 is about 233.6152087798.

The spelling of 12749799 in words is "twelve million, seven hundred forty-nine thousand, seven hundred ninety-nine".