1317249 has 8 divisors (see below), whose sum is σ = 1951520. Its totient is φ = 878148.

The previous prime is 1317247. The next prime is 1317257. The reversal of 1317249 is 9427131.

It is not a de Polignac number, because 1317249 - 2¹ = 1317247 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 48787 = 1317249 / (1 + 3 + 1 + 7 + 2 + 4 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317247) 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, 24367 + ... + 24420.

It is an arithmetic number, because the mean of its divisors is an integer number (243940).

2^1317249 is an apocalyptic number.

It is an amenable number.

1317249 is a deficient number, since it is larger than the sum of its proper divisors (634271).

1317249 is an equidigital number, since it uses as much as digits as its factorization.

1317249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48796 (or 48790 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1317249 is about 1147.7146857996. The cubic root of 1317249 is about 109.6198724777.

The spelling of 1317249 in words is "one million, three hundred seventeen thousand, two hundred forty-nine".