12280999 has 4 divisors (see below), whose sum is σ = 12400336. Its totient is φ = 12161664.

The previous prime is 12280997. The next prime is 12281029. The reversal of 12280999 is 99908221.

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 12280999 - 2¹ = 12280997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12280993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59514 + ... + 59719.

It is an arithmetic number, because the mean of its divisors is an integer number (3100084).

Almost surely, 2^12280999 is an apocalyptic number.

12280999 is a deficient number, since it is larger than the sum of its proper divisors (119337).

12280999 is a wasteful number, since it uses less digits than its factorization.

12280999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119336.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 12280999 is about 3504.4256305420. The cubic root of 12280999 is about 230.7160983175.

The spelling of 12280999 in words is "twelve million, two hundred eighty thousand, nine hundred ninety-nine".