397304863 has 2 divisors, whose sum is σ = 397304864. Its totient is φ = 397304862.

The previous prime is 397304813. The next prime is 397304881. The reversal of 397304863 is 368403793.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397304863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397304813) 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, 198652431 + 198652432.

It is an arithmetic number, because the mean of its divisors is an integer number (198652432).

Almost surely, 2^397304863 is an apocalyptic number.

397304863 is a deficient number, since it is larger than the sum of its proper divisors (1).

397304863 is an equidigital number, since it uses as much as digits as its factorization.

397304863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 397304863 is about 19932.5076947182. The cubic root of 397304863 is about 735.1477408286.

The spelling of 397304863 in words is "three hundred ninety-seven million, three hundred four thousand, eight hundred sixty-three".