12799281 has 8 divisors (see below), whose sum is σ = 18617184. Its totient is φ = 7757120.

The previous prime is 12799279. The next prime is 12799291. The reversal of 12799281 is 18299721.

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 12799281 - 2¹ = 12799279 is a prime.

It is a super-2 number, since 2×12799281² = 327643188233922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12799231) 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, 193896 + ... + 193961.

It is an arithmetic number, because the mean of its divisors is an integer number (2327148).

Almost surely, 2^12799281 is an apocalyptic number.

12799281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12799281 is a deficient number, since it is larger than the sum of its proper divisors (5817903).

12799281 is a wasteful number, since it uses less digits than its factorization.

12799281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387871.

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

The square root of 12799281 is about 3577.6082792838. The cubic root of 12799281 is about 233.9170390401.

The spelling of 12799281 in words is "twelve million, seven hundred ninety-nine thousand, two hundred eighty-one".