297439489 has 2 divisors, whose sum is σ = 297439490. Its totient is φ = 297439488.

The previous prime is 297439469. The next prime is 297439501. The reversal of 297439489 is 984934792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259210000 + 38229489 = 16100^2 + 6183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-297439489 is a prime.

It is a super-2 number, since 2×297439489² = 176940499233162242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (297439459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148719744 + 148719745.

It is an arithmetic number, because the mean of its divisors is an integer number (148719745).

Almost surely, 2^297439489 is an apocalyptic number.

It is an amenable number.

297439489 is a deficient number, since it is larger than the sum of its proper divisors (1).

297439489 is an equidigital number, since it uses as much as digits as its factorization.

297439489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 55.

The square root of 297439489 is about 17246.4340951978. The cubic root of 297439489 is about 667.5229608639.

The spelling of 297439489 in words is "two hundred ninety-seven million, four hundred thirty-nine thousand, four hundred eighty-nine".