12208387 has 4 divisors (see below), whose sum is σ = 12355560. Its totient is φ = 12061216.

The previous prime is 12208381. The next prime is 12208411. The reversal of 12208387 is 78380221.

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 12208387 - 2¹¹ = 12206339 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12208381) 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, 73462 + ... + 73627.

It is an arithmetic number, because the mean of its divisors is an integer number (3088890).

Almost surely, 2^12208387 is an apocalyptic number.

12208387 is a deficient number, since it is larger than the sum of its proper divisors (147173).

12208387 is an equidigital number, since it uses as much as digits as its factorization.

12208387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147172.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12208387 is about 3494.0502286029. The cubic root of 12208387 is about 230.2604925107.

The spelling of 12208387 in words is "twelve million, two hundred eight thousand, three hundred eighty-seven".