12799555 has 8 divisors (see below), whose sum is σ = 16263072. Its totient is φ = 9637248.

The previous prime is 12799541. The next prime is 12799573. The reversal of 12799555 is 55599721.

It is a happy number.

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 12799555 - 2⁹ = 12799043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 75207 + ... + 75376.

It is an arithmetic number, because the mean of its divisors is an integer number (2032884).

Almost surely, 2^12799555 is an apocalyptic number.

12799555 is a deficient number, since it is larger than the sum of its proper divisors (3463517).

12799555 is a wasteful number, since it uses less digits than its factorization.

12799555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150605.

The product of its digits is 141750, while the sum is 43.

The square root of 12799555 is about 3577.6465728185. The cubic root of 12799555 is about 233.9187082175.

The spelling of 12799555 in words is "twelve million, seven hundred ninety-nine thousand, five hundred fifty-five".