4243397 has 2 divisors, whose sum is σ = 4243398. Its totient is φ = 4243396.

The previous prime is 4243391. The next prime is 4243409. The reversal of 4243397 is 7933424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2172676 + 2070721 = 1474^2 + 1439^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243397 - 2¹⁸ = 3981253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4243391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121698 + 2121699.

It is an arithmetic number, because the mean of its divisors is an integer number (2121699).

Almost surely, 2^4243397 is an apocalyptic number.

It is an amenable number.

4243397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243397 is an equidigital number, since it uses as much as digits as its factorization.

4243397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 4243397 is about 2059.9507275661. The cubic root of 4243397 is about 161.8966596937.

The spelling of 4243397 in words is "four million, two hundred forty-three thousand, three hundred ninety-seven".