1317189 has 4 divisors (see below), whose sum is σ = 1756256. Its totient is φ = 878124.

The previous prime is 1317161. The next prime is 1317191. The reversal of 1317189 is 9817131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9817131 = 3 ⋅3272377.

It is not a de Polignac number, because 1317189 - 2⁵ = 1317157 is a prime.

It is a D-number.

It is a Duffinian number.

1317189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317119) 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, 219529 + ... + 219534.

It is an arithmetic number, because the mean of its divisors is an integer number (439064).

2^1317189 is an apocalyptic number.

It is an amenable number.

1317189 is a deficient number, since it is larger than the sum of its proper divisors (439067).

1317189 is an equidigital number, since it uses as much as digits as its factorization.

1317189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439066.

The product of its digits is 1512, while the sum is 30.

The square root of 1317189 is about 1147.6885466014. The cubic root of 1317189 is about 109.6182080765.

The spelling of 1317189 in words is "one million, three hundred seventeen thousand, one hundred eighty-nine".