1220009 has 8 divisors (see below), whose sum is σ = 1467840. Its totient is φ = 990576.

The previous prime is 1219991. The next prime is 1220027. The reversal of 1220009 is 9000221.

It is an interprime number because it is at equal distance from previous prime (1219991) and next prime (1220027).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220009 - 2⁸ = 1219753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1219975 and 1220002.

It is not an unprimeable number, because it can be changed into a prime (1220029) 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 7 ways as a sum of consecutive naturals, for example, 4454 + ... + 4719.

It is an arithmetic number, because the mean of its divisors is an integer number (183480).

2^1220009 is an apocalyptic number.

1220009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1220009 is a deficient number, since it is larger than the sum of its proper divisors (247831).

1220009 is an equidigital number, since it uses as much as digits as its factorization.

1220009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9199.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1220009 is about 1104.5401758198. The cubic root of 1220009 is about 106.8532357675.

The spelling of 1220009 in words is "one million, two hundred twenty thousand, nine".