1316979 has 20 divisors (see below), whose sum is σ = 2003760. Its totient is φ = 861840.

The previous prime is 1316971. The next prime is 1316983. The reversal of 1316979 is 9796131.

It is not a de Polignac number, because 1316979 - 2³ = 1316971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5637 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (100188).

2^1316979 is an apocalyptic number.

1316979 is a deficient number, since it is larger than the sum of its proper divisors (686781).

1316979 is an equidigital number, since it uses as much as digits as its factorization.

1316979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 303 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1316979 is about 1147.5970547191. The cubic root of 1316979 is about 109.6123822745.

The spelling of 1316979 in words is "one million, three hundred sixteen thousand, nine hundred seventy-nine".