1397117 has 2 divisors, whose sum is σ = 1397118. Its totient is φ = 1397116.

The previous prime is 1397107. The next prime is 1397119. The reversal of 1397117 is 7117931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 454276 = 971^2 + 674^2 .

It is an emirp because it is prime and its reverse (7117931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1397117 - 2⁴ = 1397101 is a prime.

Together with 1397119, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1397117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1397119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698558 + 698559.

It is an arithmetic number, because the mean of its divisors is an integer number (698559).

2^1397117 is an apocalyptic number.

It is an amenable number.

1397117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397117 is an equidigital number, since it uses as much as digits as its factorization.

1397117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1323, while the sum is 29.

The square root of 1397117 is about 1181.9970389134. The cubic root of 1397117 is about 111.7920514317.

The spelling of 1397117 in words is "one million, three hundred ninety-seven thousand, one hundred seventeen".