13280899 has 4 divisors (see below), whose sum is σ = 13531536. Its totient is φ = 13030264.

The previous prime is 13280881. The next prime is 13280921. The reversal of 13280899 is 99808231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13280899 - 2¹¹ = 13278851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13280819) 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 3 ways as a sum of consecutive naturals, for example, 125239 + ... + 125344.

It is an arithmetic number, because the mean of its divisors is an integer number (3382884).

Almost surely, 2^13280899 is an apocalyptic number.

13280899 is a deficient number, since it is larger than the sum of its proper divisors (250637).

13280899 is an equidigital number, since it uses as much as digits as its factorization.

13280899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250636.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13280899 is about 3644.2967771574. The cubic root of 13280899 is about 236.8149730591.

The spelling of 13280899 in words is "thirteen million, two hundred eighty thousand, eight hundred ninety-nine".