1208009 has 4 divisors (see below), whose sum is σ = 1317840. Its totient is φ = 1098180.

The previous prime is 1207981. The next prime is 1208017. The reversal of 1208009 is 9008021.

1208009 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1208009 - 2¹² = 1203913 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 (1208069) 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, 54899 + ... + 54920.

It is an arithmetic number, because the mean of its divisors is an integer number (329460).

2^1208009 is an apocalyptic number.

It is an amenable number.

1208009 is a deficient number, since it is larger than the sum of its proper divisors (109831).

1208009 is a wasteful number, since it uses less digits than its factorization.

1208009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109830.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1208009 is about 1099.0946274093. The cubic root of 1208009 is about 106.5017449221.

The spelling of 1208009 in words is "one million, two hundred eight thousand, nine".