1343789 has 2 divisors, whose sum is σ = 1343790. Its totient is φ = 1343788.

The previous prime is 1343767. The next prime is 1343791. The reversal of 1343789 is 9873431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1247689 + 96100 = 1117^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343789 - 2¹² = 1339693 is a prime.

Together with 1343791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671894 + 671895.

It is an arithmetic number, because the mean of its divisors is an integer number (671895).

2^1343789 is an apocalyptic number.

It is an amenable number.

1343789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343789 is an equidigital number, since it uses as much as digits as its factorization.

1343789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 1343789 is about 1159.2191337275. The cubic root of 1343789 is about 110.3511916240.

The spelling of 1343789 in words is "one million, three hundred forty-three thousand, seven hundred eighty-nine".