1347397 has 2 divisors, whose sum is σ = 1347398. Its totient is φ = 1347396.

The previous prime is 1347391. The next prime is 1347413. The reversal of 1347397 is 7937431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919681 + 427716 = 959^2 + 654^2 .

It is an emirp because it is prime and its reverse (7937431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1347397 - 2³ = 1347389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1347391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673698 + 673699.

It is an arithmetic number, because the mean of its divisors is an integer number (673699).

2^1347397 is an apocalyptic number.

It is an amenable number.

1347397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1347397 is an equidigital number, since it uses as much as digits as its factorization.

1347397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 1347397 is about 1160.7743105359. The cubic root of 1347397 is about 110.4498656707.

Adding to 1347397 its sum of digits (34), we get a palindrome (1347431).

The spelling of 1347397 in words is "one million, three hundred forty-seven thousand, three hundred ninety-seven".