1317009 has 8 divisors (see below), whose sum is σ = 1778560. Its totient is φ = 866736.

The previous prime is 1316999. The next prime is 1317013. The reversal of 1317009 is 9007131.

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

It is not a de Polignac number, because 1317009 - 2⁷ = 1316881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542 + ... + 3015.

It is an arithmetic number, because the mean of its divisors is an integer number (222320).

2^1317009 is an apocalyptic number.

It is an amenable number.

1317009 is a deficient number, since it is larger than the sum of its proper divisors (461551).

1317009 is an equidigital number, since it uses as much as digits as its factorization.

1317009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 1317009 is about 1147.6101254346. The cubic root of 1317009 is about 109.6132145698.

It can be divided in two parts, 131 and 7009, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 1317009 in words is "one million, three hundred seventeen thousand, nine".