397034243 has 2 divisors, whose sum is σ = 397034244. Its totient is φ = 397034242.

The previous prime is 397034233. The next prime is 397034263. The reversal of 397034243 is 342430793.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397034243 - 2⁴ = 397034227 is a prime.

It is a super-2 number, since 2×397034243² = 315272380229166098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (397034233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198517121 + 198517122.

It is an arithmetic number, because the mean of its divisors is an integer number (198517122).

Almost surely, 2^397034243 is an apocalyptic number.

397034243 is a deficient number, since it is larger than the sum of its proper divisors (1).

397034243 is an equidigital number, since it uses as much as digits as its factorization.

397034243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 397034243 is about 19925.7181300951. The cubic root of 397034243 is about 734.9807902179.

The spelling of 397034243 in words is "three hundred ninety-seven million, thirty-four thousand, two hundred forty-three".