397397227 has 2 divisors, whose sum is σ = 397397228. Its totient is φ = 397397226.

The previous prime is 397397207. The next prime is 397397281. The reversal of 397397227 is 722793793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397397227 - 2¹⁵ = 397364459 is a prime.

It is not a weakly prime, because it can be changed into another prime (397397207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198698613 + 198698614.

It is an arithmetic number, because the mean of its divisors is an integer number (198698614).

Almost surely, 2^397397227 is an apocalyptic number.

397397227 is a deficient number, since it is larger than the sum of its proper divisors (1).

397397227 is an equidigital number, since it uses as much as digits as its factorization.

397397227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1000188, while the sum is 49.

The square root of 397397227 is about 19934.8244787859. The cubic root of 397397227 is about 735.2047045788.

The spelling of 397397227 in words is "three hundred ninety-seven million, three hundred ninety-seven thousand, two hundred twenty-seven".