1396817 has 2 divisors, whose sum is σ = 1396818. Its totient is φ = 1396816.

The previous prime is 1396789. The next prime is 1396819. The reversal of 1396817 is 7186931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 414736 = 991^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396817 - 2⁶ = 1396753 is a prime.

Together with 1396819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1396819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698408 + 698409.

It is an arithmetic number, because the mean of its divisors is an integer number (698409).

2^1396817 is an apocalyptic number.

It is an amenable number.

1396817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396817 is an equidigital number, since it uses as much as digits as its factorization.

1396817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 1396817 is about 1181.8701282290. The cubic root of 1396817 is about 111.7840492347.

The spelling of 1396817 in words is "one million, three hundred ninety-six thousand, eight hundred seventeen".