297391 has 2 divisors, whose sum is σ = 297392. Its totient is φ = 297390.

The previous prime is 297377. The next prime is 297397. The reversal of 297391 is 193792.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 297391 - 2⁵ = 297359 is a prime.

It is a Chen prime.

It is equal to p₂₅₇₉₈ and since 297391 and 25798 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148695 + 148696.

It is an arithmetic number, because the mean of its divisors is an integer number (148696).

2²⁹⁷³⁹¹ is an apocalyptic number.

297391 is a deficient number, since it is larger than the sum of its proper divisors (1).

297391 is an equidigital number, since it uses as much as digits as its factorization.

297391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 31.

The square root of 297391 is about 545.3356764416. The cubic root of 297391 is about 66.7486685385.

The spelling of 297391 in words is "two hundred ninety-seven thousand, three hundred ninety-one".