385228297 has 2 divisors, whose sum is σ = 385228298. Its totient is φ = 385228296.

The previous prime is 385228267. The next prime is 385228303. The reversal of 385228297 is 792822583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292375801 + 92852496 = 17099^2 + 9636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385228297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385228267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192614148 + 192614149.

It is an arithmetic number, because the mean of its divisors is an integer number (192614149).

Almost surely, 2^385228297 is an apocalyptic number.

It is an amenable number.

385228297 is a deficient number, since it is larger than the sum of its proper divisors (1).

385228297 is an equidigital number, since it uses as much as digits as its factorization.

385228297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 385228297 is about 19627.2335544264. The cubic root of 385228297 is about 727.6223997044.

The spelling of 385228297 in words is "three hundred eighty-five million, two hundred twenty-eight thousand, two hundred ninety-seven".