12821799 has 8 divisors (see below), whose sum is σ = 17685360. Its totient is φ = 8253056.

The previous prime is 12821761. The next prime is 12821801. The reversal of 12821799 is 99712821.

12821799 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 12821799 - 2⁷ = 12821671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12821729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73602 + ... + 73775.

It is an arithmetic number, because the mean of its divisors is an integer number (2210670).

Almost surely, 2^12821799 is an apocalyptic number.

12821799 is a deficient number, since it is larger than the sum of its proper divisors (4863561).

12821799 is a wasteful number, since it uses less digits than its factorization.

12821799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147409.

The product of its digits is 18144, while the sum is 39.

The square root of 12821799 is about 3580.7539708838. The cubic root of 12821799 is about 234.0541367913.

It can be divided in two parts, 1282 and 1799, that added together give a triangular number (3081 = T₇₈).

The spelling of 12821799 in words is "twelve million, eight hundred twenty-one thousand, seven hundred ninety-nine".