397469243 has 2 divisors, whose sum is σ = 397469244. Its totient is φ = 397469242.

The previous prime is 397469221. The next prime is 397469257. The reversal of 397469243 is 342964793.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397469243 - 2¹⁰ = 397468219 is a prime.

It is not a weakly prime, because it can be changed into another prime (397469203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198734621 + 198734622.

It is an arithmetic number, because the mean of its divisors is an integer number (198734622).

Almost surely, 2^397469243 is an apocalyptic number.

397469243 is a deficient number, since it is larger than the sum of its proper divisors (1).

397469243 is an equidigital number, since it uses as much as digits as its factorization.

397469243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 47.

The square root of 397469243 is about 19936.6306832423. The cubic root of 397469243 is about 735.2491129611.

The spelling of 397469243 in words is "three hundred ninety-seven million, four hundred sixty-nine thousand, two hundred forty-three".