1319917 has 2 divisors, whose sum is σ = 1319918. Its totient is φ = 1319916.

The previous prime is 1319909. The next prime is 1319933. The reversal of 1319917 is 7199131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872356 + 447561 = 934^2 + 669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319917 - 2³ = 1319909 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311917) 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 as a sum of consecutive naturals, namely, 659958 + 659959.

It is an arithmetic number, because the mean of its divisors is an integer number (659959).

2^1319917 is an apocalyptic number.

It is an amenable number.

1319917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319917 is an equidigital number, since it uses as much as digits as its factorization.

1319917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 31.

The square root of 1319917 is about 1148.8764076262. The cubic root of 1319917 is about 109.6938318139.

The spelling of 1319917 in words is "one million, three hundred nineteen thousand, nine hundred seventeen".