1443397 has 2 divisors, whose sum is σ = 1443398. Its totient is φ = 1443396.

The previous prime is 1443389. The next prime is 1443401. The reversal of 1443397 is 7933441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094116 + 349281 = 1046^2 + 591^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443397 - 2³ = 1443389 is a prime.

It is a Chen prime.

1443397 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1443307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721698 + 721699.

It is an arithmetic number, because the mean of its divisors is an integer number (721699).

2^1443397 is an apocalyptic number.

It is an amenable number.

1443397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443397 is an equidigital number, since it uses as much as digits as its factorization.

1443397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 1443397 is about 1201.4145828980. The cubic root of 1443397 is about 113.0130509373.

The spelling of 1443397 in words is "one million, four hundred forty-three thousand, three hundred ninety-seven".