297920417 has 2 divisors, whose sum is σ = 297920418. Its totient is φ = 297920416.

The previous prime is 297920387. The next prime is 297920419. The reversal of 297920417 is 714029792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169234081 + 128686336 = 13009^2 + 11344^2 .

It is a cyclic number.

It is not a de Polignac number, because 297920417 - 2⁶ = 297920353 is a prime.

Together with 297920419, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (297920419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148960208 + 148960209.

It is an arithmetic number, because the mean of its divisors is an integer number (148960209).

Almost surely, 2^297920417 is an apocalyptic number.

It is an amenable number.

297920417 is a deficient number, since it is larger than the sum of its proper divisors (1).

297920417 is an equidigital number, since it uses as much as digits as its factorization.

297920417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 297920417 is about 17260.3712880112. The cubic root of 297920417 is about 667.8825383305.

The spelling of 297920417 in words is "two hundred ninety-seven million, nine hundred twenty thousand, four hundred seventeen".