12203987 has 4 divisors (see below), whose sum is σ = 12597696. Its totient is φ = 11810280.

The previous prime is 12203981. The next prime is 12204001. The reversal of 12203987 is 78930221.

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 12203987 - 2¹⁴ = 12187603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12203981) 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, 196808 + ... + 196869.

It is an arithmetic number, because the mean of its divisors is an integer number (3149424).

Almost surely, 2^12203987 is an apocalyptic number.

12203987 is a deficient number, since it is larger than the sum of its proper divisors (393709).

12203987 is an equidigital number, since it uses as much as digits as its factorization.

12203987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393708.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 12203987 is about 3493.4205300822. The cubic root of 12203987 is about 230.2328266144.

The spelling of 12203987 in words is "twelve million, two hundred three thousand, nine hundred eighty-seven".