1427917 has 2 divisors, whose sum is σ = 1427918. Its totient is φ = 1427916.

The previous prime is 1427911. The next prime is 1427927. The reversal of 1427917 is 7197241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1142761 + 285156 = 1069^2 + 534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1427917 is a prime.

It is a Chen prime.

1427917 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1427911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713958 + 713959.

It is an arithmetic number, because the mean of its divisors is an integer number (713959).

2^1427917 is an apocalyptic number.

It is an amenable number.

1427917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1427917 is an equidigital number, since it uses as much as digits as its factorization.

1427917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 31.

The square root of 1427917 is about 1194.9548108611. The cubic root of 1427917 is about 112.6075876125.

The spelling of 1427917 in words is "one million, four hundred twenty-seven thousand, nine hundred seventeen".